520074565 has 16 divisors (see below), whose sum is σ = 628185600. Its totient is φ = 413340480.

The previous prime is 520074497. The next prime is 520074571. The reversal of 520074565 is 565470025.

It is a de Polignac number, because none of the positive numbers 2^k-520074565 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520074565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856492 + ... + 857098.

It is an arithmetic number, because the mean of its divisors is an integer number (39261600).

Almost surely, 2^520074565 is an apocalyptic number.

It is an amenable number.

520074565 is a deficient number, since it is larger than the sum of its proper divisors (108111035).

520074565 is a wasteful number, since it uses less digits than its factorization.

520074565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 520074565 is about 22805.1433891568. The cubic root of 520074565 is about 804.1835864726.

The spelling of 520074565 in words is "five hundred twenty million, seventy-four thousand, five hundred sixty-five".