56533643 has 2 divisors, whose sum is σ = 56533644. Its totient is φ = 56533642.

The previous prime is 56533591. The next prime is 56533649. The reversal of 56533643 is 34633565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56533643 - 2⁶ = 56533579 is a prime.

It is not a weakly prime, because it can be changed into another prime (56533649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28266821 + 28266822.

It is an arithmetic number, because the mean of its divisors is an integer number (28266822).

Almost surely, 2^56533643 is an apocalyptic number.

56533643 is a deficient number, since it is larger than the sum of its proper divisors (1).

56533643 is an equidigital number, since it uses as much as digits as its factorization.

56533643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 35.

The square root of 56533643 is about 7518.8857552167. The cubic root of 56533643 is about 383.7976613234.

The spelling of 56533643 in words is "fifty-six million, five hundred thirty-three thousand, six hundred forty-three".