520457173 has 2 divisors, whose sum is σ = 520457174. Its totient is φ = 520457172.

The previous prime is 520457167. The next prime is 520457213. The reversal of 520457173 is 371754025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343620369 + 176836804 = 18537^2 + 13298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520457173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520457143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260228586 + 260228587.

It is an arithmetic number, because the mean of its divisors is an integer number (260228587).

Almost surely, 2^520457173 is an apocalyptic number.

It is an amenable number.

520457173 is a deficient number, since it is larger than the sum of its proper divisors (1).

520457173 is an equidigital number, since it uses as much as digits as its factorization.

520457173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 520457173 is about 22813.5304808353. The cubic root of 520457173 is about 804.3807451572.

The spelling of 520457173 in words is "five hundred twenty million, four hundred fifty-seven thousand, one hundred seventy-three".