55051001000538 has 32 divisors (see below), whose sum is σ = 110161874987136. Its totient is φ = 18340356830208.

The previous prime is 55051001000497. The next prime is 55051001000539. The reversal of 55051001000538 is 83500010015055.

It is a super-2 number, since 2×55051001000538² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55051001000499 and 55051001000508.

It is not an unprimeable number, because it can be changed into a prime (55051001000539) 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, 112468906 + ... + 112957322.

It is an arithmetic number, because the mean of its divisors is an integer number (3442558593348).

Almost surely, 2^{55051001000538} is an apocalyptic number.

55051001000538 is an abundant number, since it is smaller than the sum of its proper divisors (55110873986598).

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

55051001000538 is a wasteful number, since it uses less digits than its factorization.

55051001000538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498598.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 55051001000538 in words is "fifty-five trillion, fifty-one billion, one million, five hundred thirty-eight", and thus it is an aban number.