520172040 has 32 divisors (see below), whose sum is σ = 1560516480. Its totient is φ = 138712512.

The previous prime is 520172017. The next prime is 520172053. The reversal of 520172040 is 40271025.

It is a junction number, because it is equal to n+sod(n) for n = 520171998 and 520172016.

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, 2167264 + ... + 2167503.

It is an arithmetic number, because the mean of its divisors is an integer number (48766140).

Almost surely, 2^520172040 is an apocalyptic number.

It is an amenable number.

520172040 is an abundant number, since it is smaller than the sum of its proper divisors (1040344440).

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

520172040 is a wasteful number, since it uses less digits than its factorization.

520172040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334781 (or 4334777 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 520172040 is about 22807.2804165687. The cubic root of 520172040 is about 804.2338247164.

The spelling of 520172040 in words is "five hundred twenty million, one hundred seventy-two thousand, forty".