520251253 has 2 divisors, whose sum is σ = 520251254. Its totient is φ = 520251252.

The previous prime is 520251247. The next prime is 520251301. The reversal of 520251253 is 352152025.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354305329 + 165945924 = 18823^2 + 12882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520251253 is a prime.

It is a super-2 number, since 2×520251253² = 541322732496140018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520251653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260125626 + 260125627.

It is an arithmetic number, because the mean of its divisors is an integer number (260125627).

Almost surely, 2^520251253 is an apocalyptic number.

It is an amenable number.

520251253 is a deficient number, since it is larger than the sum of its proper divisors (1).

520251253 is an equidigital number, since it uses as much as digits as its factorization.

520251253 is an evil number, because the sum of its binary digits is even.

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

The square root of 520251253 is about 22809.0169231381. The cubic root of 520251253 is about 804.2746461726.

The spelling of 520251253 in words is "five hundred twenty million, two hundred fifty-one thousand, two hundred fifty-three".