51103303255256 has 64 divisors (see below), whose sum is σ = 113714667823680. Its totient is φ = 21074532894720.

The previous prime is 51103303255253. The next prime is 51103303255283. The reversal of 51103303255256 is 65255230330115.

It is a super-2 number, since 2×51103303255256² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51103303255253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152281271 + ... + 152616486.

It is an arithmetic number, because the mean of its divisors is an integer number (1776791684745).

Almost surely, 2^{51103303255256} is an apocalyptic number.

51103303255256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51103303255256 is an abundant number, since it is smaller than the sum of its proper divisors (62611364568424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51103303255256 is a wasteful number, since it uses less digits than its factorization.

51103303255256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304897884 (or 304897880 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 41.

The spelling of 51103303255256 in words is "fifty-one trillion, one hundred three billion, three hundred three million, two hundred fifty-five thousand, two hundred fifty-six".