57198399 has 8 divisors (see below), whose sum is σ = 76847232. Its totient is φ = 37840920.

The previous prime is 57198391. The next prime is 57198433. The reversal of 57198399 is 99389175.

It is a happy number.

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

It is not a de Polignac number, because 57198399 - 2³ = 57198391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57198391) 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, 72379 + ... + 73164.

It is an arithmetic number, because the mean of its divisors is an integer number (9605904).

Almost surely, 2^57198399 is an apocalyptic number.

57198399 is a deficient number, since it is larger than the sum of its proper divisors (19648833).

57198399 is a wasteful number, since it uses less digits than its factorization.

57198399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145677.

The product of its digits is 612360, while the sum is 51.

The square root of 57198399 is about 7562.9623164472. The cubic root of 57198399 is about 385.2961099732.

The spelling of 57198399 in words is "fifty-seven million, one hundred ninety-eight thousand, three hundred ninety-nine".