520930957 has 2 divisors, whose sum is σ = 520930958. Its totient is φ = 520930956.

The previous prime is 520930903. The next prime is 520930967. The reversal of 520930957 is 759039025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376786921 + 144144036 = 19411^2 + 12006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520930957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520930967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260465478 + 260465479.

It is an arithmetic number, because the mean of its divisors is an integer number (260465479).

Almost surely, 2^520930957 is an apocalyptic number.

It is an amenable number.

520930957 is a deficient number, since it is larger than the sum of its proper divisors (1).

520930957 is an equidigital number, since it uses as much as digits as its factorization.

520930957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 520930957 is about 22823.9119565424. The cubic root of 520930957 is about 804.6247531583.

The spelling of 520930957 in words is "five hundred twenty million, nine hundred thirty thousand, nine hundred fifty-seven".