520251085 has 32 divisors (see below), whose sum is σ = 676667520. Its totient is φ = 382543872.

The previous prime is 520251041. The next prime is 520251089. The reversal of 520251085 is 580152025.

It is a cyclic number.

It is not a de Polignac number, because 520251085 - 2²⁵ = 486696653 is a prime.

It is a super-2 number, since 2×520251085² = 541322382887354450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520251089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1138177 + ... + 1138633.

It is an arithmetic number, because the mean of its divisors is an integer number (21145860).

Almost surely, 2^520251085 is an apocalyptic number.

It is an amenable number.

520251085 is a deficient number, since it is larger than the sum of its proper divisors (156416435).

520251085 is a wasteful number, since it uses less digits than its factorization.

520251085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 520251085 is about 22809.0132403837. The cubic root of 520251085 is about 804.2745596002.

The spelling of 520251085 in words is "five hundred twenty million, two hundred fifty-one thousand, eighty-five".