57909198 has 8 divisors (see below), whose sum is σ = 115818408. Its totient is φ = 19303064.

The previous prime is 57909139. The next prime is 57909211. The reversal of 57909198 is 89190975.

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

57909198 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4825761 + ... + 4825772.

It is an arithmetic number, because the mean of its divisors is an integer number (14477301).

Almost surely, 2^57909198 is an apocalyptic number.

57909198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57909198 is a wasteful number, since it uses less digits than its factorization.

57909198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651538.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 57909198 is about 7609.8093274405. The cubic root of 57909198 is about 386.8855566362.

The spelling of 57909198 in words is "fifty-seven million, nine hundred nine thousand, one hundred ninety-eight".