56311554 has 32 divisors (see below), whose sum is σ = 127673280. Its totient is φ = 16414272.

The previous prime is 56311537. The next prime is 56311561. The reversal of 56311554 is 45511365.

56311554 = 823² + 824² + ... + 898².

It is a super-2 number, since 2×56311554² = 6341982227789832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17517 + ... + 20480.

It is an arithmetic number, because the mean of its divisors is an integer number (3989790).

Almost surely, 2^56311554 is an apocalyptic number.

56311554 is an abundant number, since it is smaller than the sum of its proper divisors (71361726).

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

56311554 is a wasteful number, since it uses less digits than its factorization.

56311554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38034.

The product of its digits is 9000, while the sum is 30.

The square root of 56311554 is about 7504.1024779783. The cubic root of 56311554 is about 383.2944264650.

It can be divided in two parts, 56311 and 554, that added together give a palindrome (56865).

The spelling of 56311554 in words is "fifty-six million, three hundred eleven thousand, five hundred fifty-four".