56330591 has 2 divisors, whose sum is σ = 56330592. Its totient is φ = 56330590.

The previous prime is 56330579. The next prime is 56330621. The reversal of 56330591 is 19503365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56330591 - 2¹⁸ = 56068447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56390591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28165295 + 28165296.

It is an arithmetic number, because the mean of its divisors is an integer number (28165296).

Almost surely, 2^56330591 is an apocalyptic number.

56330591 is a deficient number, since it is larger than the sum of its proper divisors (1).

56330591 is an equidigital number, since it uses as much as digits as its factorization.

56330591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 56330591 is about 7505.3708102931. The cubic root of 56330591 is about 383.3376144869.

The spelling of 56330591 in words is "fifty-six million, three hundred thirty thousand, five hundred ninety-one".