56319493 has 2 divisors, whose sum is σ = 56319494. Its totient is φ = 56319492.

The previous prime is 56319451. The next prime is 56319559. The reversal of 56319493 is 39491365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 1292769 = 7418^2 + 1137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56319493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56319413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28159746 + 28159747.

It is an arithmetic number, because the mean of its divisors is an integer number (28159747).

Almost surely, 2^56319493 is an apocalyptic number.

It is an amenable number.

56319493 is a deficient number, since it is larger than the sum of its proper divisors (1).

56319493 is an equidigital number, since it uses as much as digits as its factorization.

56319493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The square root of 56319493 is about 7504.6314366530. The cubic root of 56319493 is about 383.3124383486.

The spelling of 56319493 in words is "fifty-six million, three hundred nineteen thousand, four hundred ninety-three".