56521242 has 12 divisors (see below), whose sum is σ = 122462730. Its totient is φ = 18840408.

The previous prime is 56521217. The next prime is 56521249. The reversal of 56521242 is 24212565.

56521242 is a `hidden beast` number, since 5 + 652 + 1 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56385081 + 136161 = 7509^2 + 369^2 .

It is not an unprimeable number, because it can be changed into a prime (56521249) 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, 1570017 + ... + 1570052.

Almost surely, 2^56521242 is an apocalyptic number.

56521242 is an abundant number, since it is smaller than the sum of its proper divisors (65941488).

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

56521242 is a wasteful number, since it uses less digits than its factorization.

56521242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140077 (or 3140074 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 56521242 is about 7518.0610532238. The cubic root of 56521242 is about 383.7695964840.

The spelling of 56521242 in words is "fifty-six million, five hundred twenty-one thousand, two hundred forty-two".