56161105501 has 16 divisors (see below), whose sum is σ = 57962838528. Its totient is φ = 54380592000.

The previous prime is 56161105457. The next prime is 56161105523. The reversal of 56161105501 is 10550116165.

It is a cyclic number.

It is not a de Polignac number, because 56161105501 - 2⁷ = 56161105373 is a prime.

It is a super-2 number, since 2×56161105501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56161105541) 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, 8496940 + ... + 8503546.

It is an arithmetic number, because the mean of its divisors is an integer number (3622677408).

Almost surely, 2^56161105501 is an apocalyptic number.

It is an amenable number.

56161105501 is a deficient number, since it is larger than the sum of its proper divisors (1801733027).

56161105501 is a wasteful number, since it uses less digits than its factorization.

56161105501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8172.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 56161105501 in words is "fifty-six billion, one hundred sixty-one million, one hundred five thousand, five hundred one".