56111572 has 18 divisors (see below), whose sum is σ = 107934554. Its totient is φ = 25505040.

The previous prime is 56111533. The next prime is 56111591. The reversal of 56111572 is 27511165.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 18974736 = 6094^2 + 4356^2 .

It is a super-2 number, since 2×56111572² = 6297017024622368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56111572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57483 + ... + 58450.

Almost surely, 2^56111572 is an apocalyptic number.

It is an amenable number.

56111572 is a deficient number, since it is larger than the sum of its proper divisors (51822982).

56111572 is a wasteful number, since it uses less digits than its factorization.

56111572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115959 (or 115946 counting only the distinct ones).

The product of its digits is 2100, while the sum is 28.

The square root of 56111572 is about 7490.7657819478. The cubic root of 56111572 is about 382.8401508068.

It can be divided in two parts, 56 and 111572, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 56111572 in words is "fifty-six million, one hundred eleven thousand, five hundred seventy-two".