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51031153153 = 1091373417341
BaseRepresentation
bin101111100001101100…
…011001101000000001
311212201110010011211101
4233201230121220001
51314002433400103
635235434414401
73454412434111
oct574154315001
9155643104741
1051031153153
111a707834742
129a82291401
134a73596a16
14268166b041
1514da17ba1d
hexbe1b19a01

51031153153 has 8 divisors (see below), whose sum is σ = 51875251560. Its totient is φ = 50193889920.

The previous prime is 51031153133. The next prime is 51031153169. The reversal of 51031153153 is 35135113015.

It can be written as a sum of positive squares in 4 ways, for example, as 18189377424 + 32841775729 = 134868^2 + 181223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51031153153 - 225 = 50997598721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51031153133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693738 + ... + 1723603.

It is an arithmetic number, because the mean of its divisors is an integer number (6484406445).

Almost surely, 251031153153 is an apocalyptic number.

It is an amenable number.

51031153153 is a deficient number, since it is larger than the sum of its proper divisors (844098407).

51031153153 is a wasteful number, since it uses less digits than its factorization.

51031153153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417587.

The product of its (nonzero) digits is 3375, while the sum is 28.

Adding to 51031153153 its reverse (35135113015), we get a palindrome (86166266168).

The spelling of 51031153153 in words is "fifty-one billion, thirty-one million, one hundred fifty-three thousand, one hundred fifty-three".

Divisors: 1 109 137 14933 3417341 372490169 468175717 51031153153