520604945 has 8 divisors (see below), whose sum is σ = 713972544. Its totient is φ = 356986224.

The previous prime is 520604939. The next prime is 520604963. The reversal of 520604945 is 549406025.

It is a happy number.

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

It is not a de Polignac number, because 520604945 - 2¹² = 520600849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 14874427 = 520604945 / (5 + 2 + 0 + 6 + 0 + 4 + 9 + 4 + 5).

It is a Duffinian 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, 7437179 + ... + 7437248.

It is an arithmetic number, because the mean of its divisors is an integer number (89246568).

Almost surely, 2^520604945 is an apocalyptic number.

It is an amenable number.

520604945 is a deficient number, since it is larger than the sum of its proper divisors (193367599).

520604945 is a wasteful number, since it uses less digits than its factorization.

520604945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14874439.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 520604945 is about 22816.7689430384. The cubic root of 520604945 is about 804.4568665045.

The spelling of 520604945 in words is "five hundred twenty million, six hundred four thousand, nine hundred forty-five".