520977001 has 2 divisors, whose sum is σ = 520977002. Its totient is φ = 520977000.

The previous prime is 520976993. The next prime is 520977007. The reversal of 520977001 is 100779025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520934976 + 42025 = 22824^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 520977001 - 2³ = 520976993 is a prime.

It is not a weakly prime, because it can be changed into another prime (520977007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260488500 + 260488501.

It is an arithmetic number, because the mean of its divisors is an integer number (260488501).

Almost surely, 2^520977001 is an apocalyptic number.

It is an amenable number.

520977001 is a deficient number, since it is larger than the sum of its proper divisors (1).

520977001 is an equidigital number, since it uses as much as digits as its factorization.

520977001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 520977001 is about 22824.9206132245. The cubic root of 520977001 is about 804.6484588274.

The spelling of 520977001 in words is "five hundred twenty million, nine hundred seventy-seven thousand, one".