520456961 has 2 divisors, whose sum is σ = 520456962. Its totient is φ = 520456960.

The previous prime is 520456943. The next prime is 520456969. The reversal of 520456961 is 169654025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402604225 + 117852736 = 20065^2 + 10856^2 .

It is a cyclic number.

It is not a de Polignac number, because 520456961 - 2²² = 516262657 is a prime.

It is not a weakly prime, because it can be changed into another prime (520456969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260228480 + 260228481.

It is an arithmetic number, because the mean of its divisors is an integer number (260228481).

Almost surely, 2^520456961 is an apocalyptic number.

It is an amenable number.

520456961 is a deficient number, since it is larger than the sum of its proper divisors (1).

520456961 is an equidigital number, since it uses as much as digits as its factorization.

520456961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 520456961 is about 22813.5258344693. The cubic root of 520456961 is about 804.3806359400.

The spelling of 520456961 in words is "five hundred twenty million, four hundred fifty-six thousand, nine hundred sixty-one".