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53101144431 = 331966709053
BaseRepresentation
bin110001011101000100…
…110010100101101111
312002001201011122001000
4301131010302211233
51332222343110211
640221101451343
73556616165106
oct613504624557
9162051148030
1053101144431
112057a236835
12a35b570b53
1350133a892a
1427da54503d
1515abc67656
hexc5d13296f

53101144431 has 8 divisors (see below), whose sum is σ = 78668362160. Its totient is φ = 35400762936.

The previous prime is 53101144417. The next prime is 53101144451. The reversal of 53101144431 is 13444110135.

It is not a de Polignac number, because 53101144431 - 25 = 53101144399 is a prime.

It is a super-2 number, since 2×531011444312 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1966709053 = 53101144431 / (5 + 3 + 1 + 0 + 1 + 1 + 4 + 4 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53101144395 and 53101144404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53101144451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983354500 + ... + 983354553.

It is an arithmetic number, because the mean of its divisors is an integer number (9833545270).

Almost surely, 253101144431 is an apocalyptic number.

53101144431 is a deficient number, since it is larger than the sum of its proper divisors (25567217729).

53101144431 is a wasteful number, since it uses less digits than its factorization.

53101144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966709062 (or 1966709056 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 53101144431 its reverse (13444110135), we get a palindrome (66545254566).

The spelling of 53101144431 in words is "fifty-three billion, one hundred one million, one hundred forty-four thousand, four hundred thirty-one".

Divisors: 1 3 9 27 1966709053 5900127159 17700381477 53101144431