520724285 has 8 divisors (see below), whose sum is σ = 625488480. Its totient is φ = 416166544.

The previous prime is 520724251. The next prime is 520724293. The reversal of 520724285 is 582427025.

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 520724285 - 2⁶ = 520724221 is a prime.

It is a super-2 number, since 2×520724285² = 542307561977522450, which contains 22 as substring.

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, 46007 + ... + 56196.

It is an arithmetic number, because the mean of its divisors is an integer number (78186060).

Almost surely, 2^520724285 is an apocalyptic number.

It is an amenable number.

520724285 is a deficient number, since it is larger than the sum of its proper divisors (104764195).

520724285 is a wasteful number, since it uses less digits than its factorization.

520724285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103227.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 520724285 is about 22819.3839750332. The cubic root of 520724285 is about 804.5183312476.

It can be divided in two parts, 5207 and 24285, that added together give a palindrome (29492).

The spelling of 520724285 in words is "five hundred twenty million, seven hundred twenty-four thousand, two hundred eighty-five".