520772605 has 8 divisors (see below), whose sum is σ = 625130712. Its totient is φ = 416482368.

The previous prime is 520772599. The next prime is 520772641. The reversal of 520772605 is 506277025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25220484 + 495552121 = 5022^2 + 22261^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 520772605 - 2³ = 520772597 is a prime.

It is a super-2 number, since 2×520772605² = 542408212236972050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1807 + ... + 32323.

It is an arithmetic number, because the mean of its divisors is an integer number (78141339).

Almost surely, 2^520772605 is an apocalyptic number.

It is an amenable number.

520772605 is a deficient number, since it is larger than the sum of its proper divisors (104358107).

520772605 is a wasteful number, since it uses less digits than its factorization.

520772605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33935.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 520772605 is about 22820.4426994745. The cubic root of 520772605 is about 804.5432152566.

The spelling of 520772605 in words is "five hundred twenty million, seven hundred seventy-two thousand, six hundred five".