57993811 has 2 divisors, whose sum is σ = 57993812. Its totient is φ = 57993810.

The previous prime is 57993809. The next prime is 57993829. The reversal of 57993811 is 11839975.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57993811 - 2¹ = 57993809 is a prime.

It is a super-2 number, since 2×57993811² = 6726564228607442, which contains 22 as substring.

Together with 57993809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57996811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28996905 + 28996906.

It is an arithmetic number, because the mean of its divisors is an integer number (28996906).

Almost surely, 2^57993811 is an apocalyptic number.

57993811 is a deficient number, since it is larger than the sum of its proper divisors (1).

57993811 is an equidigital number, since it uses as much as digits as its factorization.

57993811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 57993811 is about 7615.3667672674. The cubic root of 57993811 is about 387.0738952653.

The spelling of 57993811 in words is "fifty-seven million, nine hundred ninety-three thousand, eight hundred eleven".