56431547 has 2 divisors, whose sum is σ = 56431548. Its totient is φ = 56431546.

The previous prime is 56431541. The next prime is 56431567. The reversal of 56431547 is 74513465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56431547 - 2¹⁸ = 56169403 is a prime.

It is not a weakly prime, because it can be changed into another prime (56431541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28215773 + 28215774.

It is an arithmetic number, because the mean of its divisors is an integer number (28215774).

Almost surely, 2^56431547 is an apocalyptic number.

56431547 is a deficient number, since it is larger than the sum of its proper divisors (1).

56431547 is an equidigital number, since it uses as much as digits as its factorization.

56431547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 56431547 is about 7512.0933833386. The cubic root of 56431547 is about 383.5664844190.

The spelling of 56431547 in words is "fifty-six million, four hundred thirty-one thousand, five hundred forty-seven".