56531359 has 2 divisors, whose sum is σ = 56531360. Its totient is φ = 56531358.

The previous prime is 56531351. The next prime is 56531429. The reversal of 56531359 is 95313565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56531359 - 2³ = 56531351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56531351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28265679 + 28265680.

It is an arithmetic number, because the mean of its divisors is an integer number (28265680).

Almost surely, 2^56531359 is an apocalyptic number.

56531359 is a deficient number, since it is larger than the sum of its proper divisors (1).

56531359 is an equidigital number, since it uses as much as digits as its factorization.

56531359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60750, while the sum is 37.

The square root of 56531359 is about 7518.7338694756. The cubic root of 56531359 is about 383.7924926863.

The spelling of 56531359 in words is "fifty-six million, five hundred thirty-one thousand, three hundred fifty-nine".