56045540 has 12 divisors (see below), whose sum is σ = 117695676. Its totient is φ = 22418208.

The previous prime is 56045537. The next prime is 56045543. The reversal of 56045540 is 4554065.

It is an interprime number because it is at equal distance from previous prime (56045537) and next prime (56045543).

It can be written as a sum of positive squares in 2 ways, for example, as 44809636 + 11235904 = 6694^2 + 3352^2 .

It is a super-2 number, since 2×56045540² = 6282205107783200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56045543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401119 + ... + 1401158.

It is an arithmetic number, because the mean of its divisors is an integer number (9807973).

Almost surely, 2^56045540 is an apocalyptic number.

It is an amenable number.

56045540 is an abundant number, since it is smaller than the sum of its proper divisors (61650136).

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

56045540 is a wasteful number, since it uses less digits than its factorization.

56045540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802286 (or 2802284 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 56045540 is about 7486.3569244326. The cubic root of 56045540 is about 382.6899166525.

The spelling of 56045540 in words is "fifty-six million, forty-five thousand, five hundred forty".