520957 has 2 divisors, whose sum is σ = 520958. Its totient is φ = 520956.

The previous prime is 520943. The next prime is 520963. The reversal of 520957 is 759025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 125316 = 629^2 + 354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260478 + 260479.

It is an arithmetic number, because the mean of its divisors is an integer number (260479).

2⁵²⁰⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

520957 is a deficient number, since it is larger than the sum of its proper divisors (1).

520957 is an equidigital number, since it uses as much as digits as its factorization.

520957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 520957 is about 721.7735101817. The cubic root of 520957 is about 80.4638161521.

The spelling of 520957 in words is "five hundred twenty thousand, nine hundred fifty-seven".