520171852 has 12 divisors (see below), whose sum is σ = 915387480. Its totient is φ = 258632576.

The previous prime is 520171843. The next prime is 520171867. The reversal of 520171852 is 258171025.

It is a super-2 number, since 2×520171852² = 541157511226219808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362533 + ... + 363964.

It is an arithmetic number, because the mean of its divisors is an integer number (76282290).

Almost surely, 2^520171852 is an apocalyptic number.

It is an amenable number.

520171852 is a deficient number, since it is larger than the sum of its proper divisors (395215628).

520171852 is a wasteful number, since it uses less digits than its factorization.

520171852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726680 (or 726678 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 520171852 is about 22807.2762950774. The cubic root of 520171852 is about 804.2337278279.

The spelling of 520171852 in words is "five hundred twenty million, one hundred seventy-one thousand, eight hundred fifty-two".