520423156 has 24 divisors (see below), whose sum is σ = 1003189824. Its totient is φ = 234257280.

The previous prime is 520423097. The next prime is 520423157. The reversal of 520423156 is 651324025.

It is a super-2 number, since 2×520423156² = 541680522602000672, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520423157) 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, 52885 + ... + 61948.

It is an arithmetic number, because the mean of its divisors is an integer number (41799576).

Almost surely, 2^520423156 is an apocalyptic number.

It is an amenable number.

520423156 is a deficient number, since it is larger than the sum of its proper divisors (482766668).

520423156 is a wasteful number, since it uses less digits than its factorization.

520423156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114951 (or 114949 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 520423156 is about 22812.7849242481. The cubic root of 520423156 is about 804.3632200419.

The spelling of 520423156 in words is "five hundred twenty million, four hundred twenty-three thousand, one hundred fifty-six".