520642506 has 32 divisors (see below), whose sum is σ = 1051056000. Its totient is φ = 171927360.

The previous prime is 520642501. The next prime is 520642511. The reversal of 520642506 is 605246025.

It is an interprime number because it is at equal distance from previous prime (520642501) and next prime (520642511).

It is not an unprimeable number, because it can be changed into a prime (520642501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320376 + ... + 321996.

It is an arithmetic number, because the mean of its divisors is an integer number (32845500).

Almost surely, 2^520642506 is an apocalyptic number.

520642506 is an abundant number, since it is smaller than the sum of its proper divisors (530413494).

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

520642506 is a wasteful number, since it uses less digits than its factorization.

520642506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 520642506 is about 22817.5920289587. The cubic root of 520642506 is about 804.4762128937.

The spelling of 520642506 in words is "five hundred twenty million, six hundred forty-two thousand, five hundred six".