57199521 has 8 divisors (see below), whose sum is σ = 78327424. Its totient is φ = 37102320.

The previous prime is 57199511. The next prime is 57199523. The reversal of 57199521 is 12599175.

57199521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57199521 - 2⁵ = 57199489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57199521.

It is not an unprimeable number, because it can be changed into a prime (57199523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257545 + ... + 257766.

It is an arithmetic number, because the mean of its divisors is an integer number (9790928).

Almost surely, 2^57199521 is an apocalyptic number.

It is an amenable number.

57199521 is a deficient number, since it is larger than the sum of its proper divisors (21127903).

57199521 is a wasteful number, since it uses less digits than its factorization.

57199521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515351.

The product of its digits is 28350, while the sum is 39.

The square root of 57199521 is about 7563.0364933669. The cubic root of 57199521 is about 385.2986292711.

The spelling of 57199521 in words is "fifty-seven million, one hundred ninety-nine thousand, five hundred twenty-one".