57213889 has 4 divisors (see below), whose sum is σ = 57263920. Its totient is φ = 57163860.

The previous prime is 57213869. The next prime is 57213907. The reversal of 57213889 is 98831275.

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 57213889 - 2¹⁹ = 56689601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57213829) 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 in 3 ways as a sum of consecutive naturals, for example, 23259 + ... + 25600.

It is an arithmetic number, because the mean of its divisors is an integer number (14315980).

Almost surely, 2^57213889 is an apocalyptic number.

It is an amenable number.

57213889 is a deficient number, since it is larger than the sum of its proper divisors (50031).

57213889 is a wasteful number, since it uses less digits than its factorization.

57213889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50030.

The product of its digits is 120960, while the sum is 43.

The square root of 57213889 is about 7563.9863167512. The cubic root of 57213889 is about 385.3308877419.

The spelling of 57213889 in words is "fifty-seven million, two hundred thirteen thousand, eight hundred eighty-nine".