520172000 has 48 divisors (see below), whose sum is σ = 1278072432. Its totient is φ = 208067200.

The previous prime is 520171997. The next prime is 520172017. The reversal of 520172000 is 271025.

It is a self number, because there is not a number n which added to its sum of digits gives 520172000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61022 + ... + 69021.

It is an arithmetic number, because the mean of its divisors is an integer number (26626509).

Almost surely, 2^520172000 is an apocalyptic number.

520172000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520172000 is an abundant number, since it is smaller than the sum of its proper divisors (757900432).

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

520172000 is a wasteful number, since it uses less digits than its factorization.

520172000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130068 (or 130050 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 520172000 is about 22807.2795396558. The cubic root of 520172000 is about 804.2338041018.

The spelling of 520172000 in words is "five hundred twenty million, one hundred seventy-two thousand".