56430643 has 2 divisors, whose sum is σ = 56430644. Its totient is φ = 56430642.

The previous prime is 56430631. The next prime is 56430659. The reversal of 56430643 is 34603465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56430643 - 2¹³ = 56422451 is a prime.

It is not a weakly prime, because it can be changed into another prime (56430613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28215321 + 28215322.

It is an arithmetic number, because the mean of its divisors is an integer number (28215322).

Almost surely, 2^56430643 is an apocalyptic number.

56430643 is a deficient number, since it is larger than the sum of its proper divisors (1).

56430643 is an equidigital number, since it uses as much as digits as its factorization.

56430643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 56430643 is about 7512.0332134516. The cubic root of 56430643 is about 383.5644362387.

The spelling of 56430643 in words is "fifty-six million, four hundred thirty thousand, six hundred forty-three".