56232581 has 2 divisors, whose sum is σ = 56232582. Its totient is φ = 56232580.

The previous prime is 56232521. The next prime is 56232593. The reversal of 56232581 is 18523265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41860900 + 14371681 = 6470^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 56232581 - 2¹⁸ = 55970437 is a prime.

It is a super-2 number, since 2×56232581² = 6324206331843122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56232521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28116290 + 28116291.

It is an arithmetic number, because the mean of its divisors is an integer number (28116291).

Almost surely, 2^56232581 is an apocalyptic number.

It is an amenable number.

56232581 is a deficient number, since it is larger than the sum of its proper divisors (1).

56232581 is an equidigital number, since it uses as much as digits as its factorization.

56232581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 56232581 is about 7498.8386434167. The cubic root of 56232581 is about 383.1151614646.

The spelling of 56232581 in words is "fifty-six million, two hundred thirty-two thousand, five hundred eighty-one".