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54001172405401 = 1325652732
BaseRepresentation
bin11000100011101001000001…
…01100101101110010011001
321002012110110112221022221021
430101310200230231302121
524034223400113433101
6310503443544042441
714242312251622624
oct1421644054556231
9232173415838837
1054001172405401
111622a850019241
126081957463421
13241939a3a0a00
14d49956532dbb
15639a63a045a1
hex311d20b2dc99

54001172405401 has 9 divisors (see below), whose sum is σ = 58474745753949. Its totient is φ = 49847147883936.

The previous prime is 54001172405359. The next prime is 54001172405407. The reversal of 54001172405401 is 10450427110045.

The square root of 54001172405401 is 7348549.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4463505515401 + 49537666890000 = 2112701^2 + 7038300^2 .

It is not a de Polignac number, because 54001172405401 - 219 = 54001171881113 is a prime.

It is a super-2 number, since 2×540011724054012 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54001172405407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 95248501 + ... + 95813773.

It is an arithmetic number, because the mean of its divisors is an integer number (6497193972661).

Almost surely, 254001172405401 is an apocalyptic number.

54001172405401 is the 7348549-th square number.

54001172405401 is the 3674275-th centered octagonal number.

It is an amenable number.

54001172405401 is a deficient number, since it is larger than the sum of its proper divisors (4473573348548).

54001172405401 is an frugal number, since it uses more digits than its factorization.

54001172405401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130572 (or 565286 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

Adding to 54001172405401 its reverse (10450427110045), we get a palindrome (64451599515446).

The spelling of 54001172405401 in words is "fifty-four trillion, one billion, one hundred seventy-two million, four hundred five thousand, four hundred one".

Divisors: 1 13 169 565273 7348549 95531137 319533564529 4153936338877 54001172405401