56540772 has 18 divisors (see below), whose sum is σ = 142922598. Its totient is φ = 18846912.

The previous prime is 56540767. The next prime is 56540777. The reversal of 56540772 is 27704565.

It is an interprime number because it is at equal distance from previous prime (56540767) and next prime (56540777).

It can be written as a sum of positive squares in only one way, i.e., 45887076 + 10653696 = 6774^2 + 3264^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1570577 = 56540772 / (5 + 6 + 5 + 4 + 0 + 7 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (56540777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 785253 + ... + 785324.

Almost surely, 2^56540772 is an apocalyptic number.

It is an amenable number.

56540772 is an abundant number, since it is smaller than the sum of its proper divisors (86381826).

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

56540772 is a wasteful number, since it uses less digits than its factorization.

56540772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570587 (or 1570582 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 56540772 is about 7519.3598131756. The cubic root of 56540772 is about 383.8137931839.

The spelling of 56540772 in words is "fifty-six million, five hundred forty thousand, seven hundred seventy-two".