520453369 has 2 divisors, whose sum is σ = 520453370. Its totient is φ = 520453368.

The previous prime is 520453363. The next prime is 520453421. The reversal of 520453369 is 963354025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282676969 + 237776400 = 16813^2 + 15420^2 .

It is a cyclic number.

It is not a de Polignac number, because 520453369 - 2²¹ = 518356217 is a prime.

It is a super-2 number, since 2×520453369² = 541743418606900322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520453363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260226684 + 260226685.

It is an arithmetic number, because the mean of its divisors is an integer number (260226685).

Almost surely, 2^520453369 is an apocalyptic number.

It is an amenable number.

520453369 is a deficient number, since it is larger than the sum of its proper divisors (1).

520453369 is an equidigital number, since it uses as much as digits as its factorization.

520453369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 520453369 is about 22813.4471091065. The cubic root of 520453369 is about 804.3787854239.

The spelling of 520453369 in words is "five hundred twenty million, four hundred fifty-three thousand, three hundred sixty-nine".