56943899 has 2 divisors, whose sum is σ = 56943900. Its totient is φ = 56943898.

The previous prime is 56943871. The next prime is 56943923. The reversal of 56943899 is 99834965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56943899 - 2⁸ = 56943643 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56943899.

It is not a weakly prime, because it can be changed into another prime (56943839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28471949 + 28471950.

It is an arithmetic number, because the mean of its divisors is an integer number (28471950).

Almost surely, 2^56943899 is an apocalyptic number.

56943899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56943899 is an equidigital number, since it uses as much as digits as its factorization.

56943899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 53.

The square root of 56943899 is about 7546.1181411372. The cubic root of 56943899 is about 384.7238115874.

The spelling of 56943899 in words is "fifty-six million, nine hundred forty-three thousand, eight hundred ninety-nine".