56545740 has 108 divisors (see below), whose sum is σ = 182372736. Its totient is φ = 14178816.

The previous prime is 56545733. The next prime is 56545763. The reversal of 56545740 is 4754565.

It is a happy number.

56545740 is a `hidden beast` number, since 565 + 4 + 57 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56545695 and 56545704.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51477 + ... + 52563.

Almost surely, 2^56545740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56545740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91186368).

56545740 is an abundant number, since it is smaller than the sum of its proper divisors (125826996).

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

56545740 is a wasteful number, since it uses less digits than its factorization.

56545740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 56545740 is about 7519.6901531912. The cubic root of 56545740 is about 383.8250342230.

The spelling of 56545740 in words is "fifty-six million, five hundred forty-five thousand, seven hundred forty".