57171398 has 4 divisors (see below), whose sum is σ = 85757100. Its totient is φ = 28585698.

The previous prime is 57171397. The next prime is 57171403. The reversal of 57171398 is 89317175.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57171397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14292848 + ... + 14292851.

It is an arithmetic number, because the mean of its divisors is an integer number (21439275).

Almost surely, 2^57171398 is an apocalyptic number.

57171398 is a deficient number, since it is larger than the sum of its proper divisors (28585702).

57171398 is a wasteful number, since it uses less digits than its factorization.

57171398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28585701.

The product of its digits is 52920, while the sum is 41.

The square root of 57171398 is about 7561.1770247760. The cubic root of 57171398 is about 385.2354729748.

The spelling of 57171398 in words is "fifty-seven million, one hundred seventy-one thousand, three hundred ninety-eight".