57217198 has 4 divisors (see below), whose sum is σ = 85825800. Its totient is φ = 28608598.

The previous prime is 57217159. The next prime is 57217201. The reversal of 57217198 is 89171275.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 57217198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14304298 + ... + 14304301.

It is an arithmetic number, because the mean of its divisors is an integer number (21456450).

Almost surely, 2^57217198 is an apocalyptic number.

57217198 is a deficient number, since it is larger than the sum of its proper divisors (28608602).

57217198 is a wasteful number, since it uses less digits than its factorization.

57217198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28608601.

The product of its digits is 35280, while the sum is 40.

The square root of 57217198 is about 7564.2050474587. The cubic root of 57217198 is about 385.3383162140.

The spelling of 57217198 in words is "fifty-seven million, two hundred seventeen thousand, one hundred ninety-eight".