520525231 has 2 divisors, whose sum is σ = 520525232. Its totient is φ = 520525230.

The previous prime is 520525219. The next prime is 520525253. The reversal of 520525231 is 132525025.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520525231 - 2¹⁵ = 520492463 is a prime.

It is a super-2 number, since 2×520525231² = 541893032215206722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520525196 and 520525205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520525631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260262615 + 260262616.

It is an arithmetic number, because the mean of its divisors is an integer number (260262616).

Almost surely, 2^520525231 is an apocalyptic number.

520525231 is a deficient number, since it is larger than the sum of its proper divisors (1).

520525231 is an equidigital number, since it uses as much as digits as its factorization.

520525231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 520525231 is about 22815.0220468883. The cubic root of 520525231 is about 804.4158054603.

The spelling of 520525231 in words is "five hundred twenty million, five hundred twenty-five thousand, two hundred thirty-one".