57087249 has 4 divisors (see below), whose sum is σ = 76116336. Its totient is φ = 38058164.

The previous prime is 57087227. The next prime is 57087253. The reversal of 57087249 is 94278075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57087249 - 2⁹ = 57086737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57087249.

It is not an unprimeable number, because it can be changed into a prime (57087209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9514539 + ... + 9514544.

It is an arithmetic number, because the mean of its divisors is an integer number (19029084).

Almost surely, 2^57087249 is an apocalyptic number.

It is an amenable number.

57087249 is a deficient number, since it is larger than the sum of its proper divisors (19029087).

57087249 is a wasteful number, since it uses less digits than its factorization.

57087249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19029086.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 57087249 is about 7555.6104319903. The cubic root of 57087249 is about 385.0463743543.

The spelling of 57087249 in words is "fifty-seven million, eighty-seven thousand, two hundred forty-nine".