57172000 has 48 divisors (see below), whose sum is σ = 140481432. Its totient is φ = 22867200.

The previous prime is 57171991. The next prime is 57172009. The reversal of 57172000 is 27175.

It is an interprime number because it is at equal distance from previous prime (57171991) and next prime (57172009).

It can be written as a sum of positive squares in 4 ways, for example, as 2471184 + 54700816 = 1572^2 + 7396^2 .

It is not an unprimeable number, because it can be changed into a prime (57172009) 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, 3147 + ... + 11146.

Almost surely, 2^57172000 is an apocalyptic number.

57172000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

57172000 is an abundant number, since it is smaller than the sum of its proper divisors (83309432).

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

57172000 is a wasteful number, since it uses less digits than its factorization.

57172000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14318 (or 14300 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 57172000 is about 7561.2168332881. The cubic root of 57172000 is about 385.2368251132.

Adding to 57172000 its reverse (27175), we get a palindrome (57199175).

The spelling of 57172000 in words is "fifty-seven million, one hundred seventy-two thousand".