520647253 has 16 divisors (see below), whose sum is σ = 663189120. Its totient is φ = 397910016.

The previous prime is 520647227. The next prime is 520647293. The reversal of 520647253 is 352746025.

It is not a de Polignac number, because 520647253 - 2⁵ = 520647221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520647203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112876 + ... + 117397.

It is an arithmetic number, because the mean of its divisors is an integer number (41449320).

Almost surely, 2^520647253 is an apocalyptic number.

It is an amenable number.

520647253 is a deficient number, since it is larger than the sum of its proper divisors (142541867).

520647253 is a wasteful number, since it uses less digits than its factorization.

520647253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230316.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 520647253 is about 22817.6960493385. The cubic root of 520647253 is about 804.4786578452.

The spelling of 520647253 in words is "five hundred twenty million, six hundred forty-seven thousand, two hundred fifty-three".