57090249 has 12 divisors (see below), whose sum is σ = 82809012. Its totient is φ = 37900800.

The previous prime is 57090247. The next prime is 57090259. The reversal of 57090249 is 94209075.

It can be written as a sum of positive squares in 2 ways, for example, as 49070025 + 8020224 = 7005^2 + 2832^2 .

It is not a de Polignac number, because 57090249 - 2¹ = 57090247 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57090247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10992 + ... + 15329.

It is an arithmetic number, because the mean of its divisors is an integer number (6900751).

Almost surely, 2^57090249 is an apocalyptic number.

It is an amenable number.

57090249 is a deficient number, since it is larger than the sum of its proper divisors (25718763).

57090249 is a wasteful number, since it uses less digits than its factorization.

57090249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26568 (or 26565 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 57090249 is about 7555.8089573520. The cubic root of 57090249 is about 385.0531191114.

The spelling of 57090249 in words is "fifty-seven million, ninety thousand, two hundred forty-nine".