51101001056 has 24 divisors (see below), whose sum is σ = 114977252880. Its totient is φ = 21900428928.

The previous prime is 51101001047. The next prime is 51101001167. The reversal of 51101001056 is 65010010115.

It is a super-2 number, since 2×51101001056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114064511 + ... + 114064958.

It is an arithmetic number, because the mean of its divisors is an integer number (4790718870).

Almost surely, 2^51101001056 is an apocalyptic number.

51101001056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51101001056 is an abundant number, since it is smaller than the sum of its proper divisors (63876251824).

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

51101001056 is a wasteful number, since it uses less digits than its factorization.

51101001056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228129486 (or 228129478 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

The spelling of 51101001056 in words is "fifty-one billion, one hundred one million, one thousand, fifty-six".