57172845 has 8 divisors (see below), whose sum is σ = 91476576. Its totient is φ = 30492176.

The previous prime is 57172837. The next prime is 57172847. The reversal of 57172845 is 54827175.

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

It is a cyclic number.

It is not a de Polignac number, because 57172845 - 2³ = 57172837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57172847) 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, 1905747 + ... + 1905776.

It is an arithmetic number, because the mean of its divisors is an integer number (11434572).

Almost surely, 2^57172845 is an apocalyptic number.

It is an amenable number.

57172845 is a deficient number, since it is larger than the sum of its proper divisors (34303731).

57172845 is a wasteful number, since it uses less digits than its factorization.

57172845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811531.

The product of its digits is 78400, while the sum is 39.

The square root of 57172845 is about 7561.2727103312. The cubic root of 57172845 is about 385.2387230325.

The spelling of 57172845 in words is "fifty-seven million, one hundred seventy-two thousand, eight hundred forty-five".