57450331 has 2 divisors, whose sum is σ = 57450332. Its totient is φ = 57450330.

The previous prime is 57450329. The next prime is 57450373. The reversal of 57450331 is 13305475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57450331 - 2¹ = 57450329 is a prime.

It is a super-2 number, since 2×57450331² = 6601081064019122, which contains 22 as substring.

Together with 57450329, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 57450331.

It is not a weakly prime, because it can be changed into another prime (57450311) 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, 28725165 + 28725166.

It is an arithmetic number, because the mean of its divisors is an integer number (28725166).

Almost surely, 2^57450331 is an apocalyptic number.

57450331 is a deficient number, since it is larger than the sum of its proper divisors (1).

57450331 is an equidigital number, since it uses as much as digits as its factorization.

57450331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 57450331 is about 7579.5996596126. The cubic root of 57450331 is about 385.8609640917.

It can be divided in two parts, 574 and 50331, that added together give a palindrome (50905).

The spelling of 57450331 in words is "fifty-seven million, four hundred fifty thousand, three hundred thirty-one".