520531045 has 8 divisors (see below), whose sum is σ = 624907800. Its totient is φ = 416244480.

The previous prime is 520531027. The next prime is 520531093. The reversal of 520531045 is 540135025.

It can be written as a sum of positive squares in 4 ways, for example, as 10764961 + 509766084 = 3281^2 + 22578^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520531045 - 2⁹ = 520530533 is a prime.

It is a congruent number.

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, 9120 + ... + 33529.

It is an arithmetic number, because the mean of its divisors is an integer number (78113475).

Almost surely, 2^520531045 is an apocalyptic number.

It is an amenable number.

520531045 is a deficient number, since it is larger than the sum of its proper divisors (104376755).

520531045 is a wasteful number, since it uses less digits than its factorization.

520531045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45095.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 520531045 is about 22815.1494625830. The cubic root of 520531045 is about 804.4188004199.

The spelling of 520531045 in words is "five hundred twenty million, five hundred thirty-one thousand, forty-five".