57420791 has 2 divisors, whose sum is σ = 57420792. Its totient is φ = 57420790.

The previous prime is 57420763. The next prime is 57420821. The reversal of 57420791 is 19702475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57420791 - 2¹⁴ = 57404407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57420731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28710395 + 28710396.

It is an arithmetic number, because the mean of its divisors is an integer number (28710396).

Almost surely, 2^57420791 is an apocalyptic number.

57420791 is a deficient number, since it is larger than the sum of its proper divisors (1).

57420791 is an equidigital number, since it uses as much as digits as its factorization.

57420791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 57420791 is about 7577.6507573258. The cubic root of 57420791 is about 385.7948183338.

The spelling of 57420791 in words is "fifty-seven million, four hundred twenty thousand, seven hundred ninety-one".