56202561 has 24 divisors (see below), whose sum is σ = 86831784. Its totient is φ = 34905600.

The previous prime is 56202541. The next prime is 56202577. The reversal of 56202561 is 16520265.

It can be written as a sum of positive squares in 4 ways, for example, as 14017536 + 42185025 = 3744^2 + 6495^2 .

It is not a de Polignac number, because 56202561 - 2¹¹ = 56200513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56202541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13635 + ... + 17271.

It is an arithmetic number, because the mean of its divisors is an integer number (3617991).

Almost surely, 2^56202561 is an apocalyptic number.

56202561 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

56202561 is a deficient number, since it is larger than the sum of its proper divisors (30629223).

56202561 is a wasteful number, since it uses less digits than its factorization.

56202561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761 (or 3758 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 56202561 is about 7496.8367329161. The cubic root of 56202561 is about 383.0469734486.

The spelling of 56202561 in words is "fifty-six million, two hundred two thousand, five hundred sixty-one".