57212889 has 8 divisors (see below), whose sum is σ = 76319040. Its totient is φ = 38124336.

The previous prime is 57212879. The next prime is 57212899. The reversal of 57212889 is 98821275.

It is an interprime number because it is at equal distance from previous prime (57212879) and next prime (57212899).

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

It is not a de Polignac number, because 57212889 - 2⁹ = 57212377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57212889.

It is not an unprimeable number, because it can be changed into a prime (57212839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9172 + ... + 14090.

It is an arithmetic number, because the mean of its divisors is an integer number (9539880).

Almost surely, 2^57212889 is an apocalyptic number.

It is an amenable number.

57212889 is a deficient number, since it is larger than the sum of its proper divisors (19106151).

57212889 is a wasteful number, since it uses less digits than its factorization.

57212889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8799.

The product of its digits is 80640, while the sum is 42.

The square root of 57212889 is about 7563.9202137516. The cubic root of 57212889 is about 385.3286427560.

The spelling of 57212889 in words is "fifty-seven million, two hundred twelve thousand, eight hundred eighty-nine".