57161249 has 2 divisors, whose sum is σ = 57161250. Its totient is φ = 57161248.

The previous prime is 57161239. The next prime is 57161281. The reversal of 57161249 is 94216175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50694400 + 6466849 = 7120^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 57161249 - 2¹⁶ = 57095713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57161239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28580624 + 28580625.

It is an arithmetic number, because the mean of its divisors is an integer number (28580625).

Almost surely, 2^57161249 is an apocalyptic number.

It is an amenable number.

57161249 is a deficient number, since it is larger than the sum of its proper divisors (1).

57161249 is an equidigital number, since it uses as much as digits as its factorization.

57161249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 57161249 is about 7560.5058693185. The cubic root of 57161249 is about 385.2126761082.

The spelling of 57161249 in words is "fifty-seven million, one hundred sixty-one thousand, two hundred forty-nine".