520454969 has 2 divisors, whose sum is σ = 520454970. Its totient is φ = 520454968.

The previous prime is 520454959. The next prime is 520455007. The reversal of 520454969 is 969454025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497290000 + 23164969 = 22300^2 + 4813^2 .

It is a cyclic number.

It is not a de Polignac number, because 520454969 - 2⁴ = 520454953 is a prime.

It is a super-2 number, since 2×520454969² = 541746749513581922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520454959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260227484 + 260227485.

It is an arithmetic number, because the mean of its divisors is an integer number (260227485).

Almost surely, 2^520454969 is an apocalyptic number.

It is an amenable number.

520454969 is a deficient number, since it is larger than the sum of its proper divisors (1).

520454969 is an equidigital number, since it uses as much as digits as its factorization.

520454969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 520454969 is about 22813.4821761168. The cubic root of 520454969 is about 804.3796097083.

The spelling of 520454969 in words is "five hundred twenty million, four hundred fifty-four thousand, nine hundred sixty-nine".