56993393 has 2 divisors, whose sum is σ = 56993394. Its totient is φ = 56993392.

The previous prime is 56993389. The next prime is 56993423. The reversal of 56993393 is 39339965.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32855824 + 24137569 = 5732^2 + 4913^2 .

It is a cyclic number.

It is not a de Polignac number, because 56993393 - 2² = 56993389 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56993303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28496696 + 28496697.

It is an arithmetic number, because the mean of its divisors is an integer number (28496697).

Almost surely, 2^56993393 is an apocalyptic number.

It is an amenable number.

56993393 is a deficient number, since it is larger than the sum of its proper divisors (1).

56993393 is an equidigital number, since it uses as much as digits as its factorization.

56993393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 590490, while the sum is 47.

The square root of 56993393 is about 7549.3968633262. The cubic root of 56993393 is about 384.8352429350.

The spelling of 56993393 in words is "fifty-six million, nine hundred ninety-three thousand, three hundred ninety-three".