57273791 has 2 divisors, whose sum is σ = 57273792. Its totient is φ = 57273790.

The previous prime is 57273763. The next prime is 57273793. The reversal of 57273791 is 19737275.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57273791 - 2²² = 53079487 is a prime.

It is a Sophie Germain prime.

Together with 57273793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57273793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28636895 + 28636896.

It is an arithmetic number, because the mean of its divisors is an integer number (28636896).

Almost surely, 2^57273791 is an apocalyptic number.

57273791 is a deficient number, since it is larger than the sum of its proper divisors (1).

57273791 is an equidigital number, since it uses as much as digits as its factorization.

57273791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92610, while the sum is 41.

The square root of 57273791 is about 7567.9449654447. The cubic root of 57273791 is about 385.4653192025.

The spelling of 57273791 in words is "fifty-seven million, two hundred seventy-three thousand, seven hundred ninety-one".