56202921 has 6 divisors (see below), whose sum is σ = 81182010. Its totient is φ = 37468608.

The previous prime is 56202863. The next prime is 56202941. The reversal of 56202921 is 12920265.

It can be written as a sum of positive squares in only one way, i.e., 46090521 + 10112400 = 6789^2 + 3180^2 .

It is not a de Polignac number, because 56202921 - 2⁷ = 56202793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56202941) 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, 3122376 + ... + 3122393.

It is an arithmetic number, because the mean of its divisors is an integer number (13530335).

Almost surely, 2^56202921 is an apocalyptic number.

It is an amenable number.

56202921 is a deficient number, since it is larger than the sum of its proper divisors (24979089).

56202921 is a wasteful number, since it uses less digits than its factorization.

56202921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6244775 (or 6244772 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 56202921 is about 7496.8607430044. The cubic root of 56202921 is about 383.0477913035.

The spelling of 56202921 in words is "fifty-six million, two hundred two thousand, nine hundred twenty-one".