57561299 has 2 divisors, whose sum is σ = 57561300. Its totient is φ = 57561298.

The previous prime is 57561281. The next prime is 57561319. The reversal of 57561299 is 99216575.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57561299 - 2⁸ = 57561043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57561199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28780649 + 28780650.

It is an arithmetic number, because the mean of its divisors is an integer number (28780650).

Almost surely, 2^57561299 is an apocalyptic number.

57561299 is a deficient number, since it is larger than the sum of its proper divisors (1).

57561299 is an equidigital number, since it uses as much as digits as its factorization.

57561299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 44.

The square root of 57561299 is about 7586.9163037429. The cubic root of 57561299 is about 386.1092404712.

The spelling of 57561299 in words is "fifty-seven million, five hundred sixty-one thousand, two hundred ninety-nine".