56370491 has 2 divisors, whose sum is σ = 56370492. Its totient is φ = 56370490.

The previous prime is 56370469. The next prime is 56370551. The reversal of 56370491 is 19407365.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56370491 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56370451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28185245 + 28185246.

It is an arithmetic number, because the mean of its divisors is an integer number (28185246).

Almost surely, 2^56370491 is an apocalyptic number.

56370491 is a deficient number, since it is larger than the sum of its proper divisors (1).

56370491 is an equidigital number, since it uses as much as digits as its factorization.

56370491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 56370491 is about 7508.0284362807. The cubic root of 56370491 is about 383.4281015011.

The spelling of 56370491 in words is "fifty-six million, three hundred seventy thousand, four hundred ninety-one".