57173871 has 4 divisors (see below), whose sum is σ = 76231832. Its totient is φ = 38115912.

The previous prime is 57173849. The next prime is 57173881. The reversal of 57173871 is 17837175.

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

It is not a de Polignac number, because 57173871 - 2¹⁰ = 57172847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57173881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9528976 + ... + 9528981.

It is an arithmetic number, because the mean of its divisors is an integer number (19057958).

Almost surely, 2^57173871 is an apocalyptic number.

57173871 is a deficient number, since it is larger than the sum of its proper divisors (19057961).

57173871 is a wasteful number, since it uses less digits than its factorization.

57173871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19057960.

The product of its digits is 41160, while the sum is 39.

The square root of 57173871 is about 7561.3405557480. The cubic root of 57173871 is about 385.2410274631.

The spelling of 57173871 in words is "fifty-seven million, one hundred seventy-three thousand, eight hundred seventy-one".