57249197 has 2 divisors, whose sum is σ = 57249198. Its totient is φ = 57249196.

The previous prime is 57249133. The next prime is 57249209. The reversal of 57249197 is 79194275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52258441 + 4990756 = 7229^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 57249197 - 2⁶ = 57249133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57249107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28624598 + 28624599.

It is an arithmetic number, because the mean of its divisors is an integer number (28624599).

Almost surely, 2^57249197 is an apocalyptic number.

It is an amenable number.

57249197 is a deficient number, since it is larger than the sum of its proper divisors (1).

57249197 is an equidigital number, since it uses as much as digits as its factorization.

57249197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 57249197 is about 7566.3199112911. The cubic root of 57249197 is about 385.4101369445.

The spelling of 57249197 in words is "fifty-seven million, two hundred forty-nine thousand, one hundred ninety-seven".