56431567 has 2 divisors, whose sum is σ = 56431568. Its totient is φ = 56431566.

The previous prime is 56431547. The next prime is 56431579. The reversal of 56431567 is 76513465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56431567 - 2¹⁵ = 56398799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56431547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28215783 + 28215784.

It is an arithmetic number, because the mean of its divisors is an integer number (28215784).

Almost surely, 2^56431567 is an apocalyptic number.

56431567 is a deficient number, since it is larger than the sum of its proper divisors (1).

56431567 is an equidigital number, since it uses as much as digits as its factorization.

56431567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 56431567 is about 7512.0947145254. The cubic root of 56431567 is about 383.5665297325.

It can be divided in two parts, 564 and 31567, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 56431567 in words is "fifty-six million, four hundred thirty-one thousand, five hundred sixty-seven".