56993899 has 2 divisors, whose sum is σ = 56993900. Its totient is φ = 56993898.

The previous prime is 56993831. The next prime is 56993929. The reversal of 56993899 is 99839965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56993899 - 2¹⁵ = 56961131 is a prime.

It is not a weakly prime, because it can be changed into another prime (56993819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28496949 + 28496950.

It is an arithmetic number, because the mean of its divisors is an integer number (28496950).

Almost surely, 2^56993899 is an apocalyptic number.

56993899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56993899 is an equidigital number, since it uses as much as digits as its factorization.

56993899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4723920, while the sum is 58.

The square root of 56993899 is about 7549.4303758628. The cubic root of 56993899 is about 384.8363818159.

The spelling of 56993899 in words is "fifty-six million, nine hundred ninety-three thousand, eight hundred ninety-nine".