57210493 has 2 divisors, whose sum is σ = 57210494. Its totient is φ = 57210492.

The previous prime is 57210467. The next prime is 57210521. The reversal of 57210493 is 39401275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47306884 + 9903609 = 6878^2 + 3147^2 .

It is a cyclic number.

It is not a de Polignac number, because 57210493 - 2²¹ = 55113341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57210403) 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, 28605246 + 28605247.

It is an arithmetic number, because the mean of its divisors is an integer number (28605247).

Almost surely, 2^57210493 is an apocalyptic number.

It is an amenable number.

57210493 is a deficient number, since it is larger than the sum of its proper divisors (1).

57210493 is an equidigital number, since it uses as much as digits as its factorization.

57210493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57210493 is about 7563.7618286141. The cubic root of 57210493 is about 385.3232636632.

The spelling of 57210493 in words is "fifty-seven million, two hundred ten thousand, four hundred ninety-three".