56431499 has 2 divisors, whose sum is σ = 56431500. Its totient is φ = 56431498.

The previous prime is 56431433. The next prime is 56431511. The reversal of 56431499 is 99413465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56431499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56437499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28215749 + 28215750.

It is an arithmetic number, because the mean of its divisors is an integer number (28215750).

Almost surely, 2^56431499 is an apocalyptic number.

56431499 is a deficient number, since it is larger than the sum of its proper divisors (1).

56431499 is an equidigital number, since it uses as much as digits as its factorization.

56431499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 56431499 is about 7512.0901884895. The cubic root of 56431499 is about 383.5663756666.

The spelling of 56431499 in words is "fifty-six million, four hundred thirty-one thousand, four hundred ninety-nine".