56540740 has 24 divisors (see below), whose sum is σ = 119051352. Its totient is φ = 22556160.

The previous prime is 56540723. The next prime is 56540741. The reversal of 56540740 is 4704565.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 470596 + 56070144 = 686^2 + 7488^2 .

It is not an unprimeable number, because it can be changed into a prime (56540741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4380 + ... + 11500.

It is an arithmetic number, because the mean of its divisors is an integer number (4960473).

Almost surely, 2^56540740 is an apocalyptic number.

It is an amenable number.

56540740 is an abundant number, since it is smaller than the sum of its proper divisors (62510612).

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

56540740 is a wasteful number, since it uses less digits than its factorization.

56540740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527 (or 7525 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 56540740 is about 7519.3576853346. The cubic root of 56540740 is about 383.8137207757.

The spelling of 56540740 in words is "fifty-six million, five hundred forty thousand, seven hundred forty".