520535507 has 4 divisors (see below), whose sum is σ = 520598976. Its totient is φ = 520472040.

The previous prime is 520535501. The next prime is 520535531. The reversal of 520535507 is 705535025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520535507 - 2¹⁴ = 520519123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520535501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17219 + ... + 36572.

It is an arithmetic number, because the mean of its divisors is an integer number (130149744).

Almost surely, 2^520535507 is an apocalyptic number.

520535507 is a deficient number, since it is larger than the sum of its proper divisors (63469).

520535507 is an equidigital number, since it uses as much as digits as its factorization.

520535507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63468.

The product of its (nonzero) digits is 26250, while the sum is 32.

The square root of 520535507 is about 22815.2472482768. The cubic root of 520535507 is about 804.4210989101.

The spelling of 520535507 in words is "five hundred twenty million, five hundred thirty-five thousand, five hundred seven".