520314649 has 2 divisors, whose sum is σ = 520314650. Its totient is φ = 520314648.

The previous prime is 520314593. The next prime is 520314673. The reversal of 520314649 is 946413025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517881049 + 2433600 = 22757^2 + 1560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520314649 is a prime.

It is not a weakly prime, because it can be changed into another prime (520384649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260157324 + 260157325.

It is an arithmetic number, because the mean of its divisors is an integer number (260157325).

Almost surely, 2^520314649 is an apocalyptic number.

It is an amenable number.

520314649 is a deficient number, since it is larger than the sum of its proper divisors (1).

520314649 is an equidigital number, since it uses as much as digits as its factorization.

520314649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 520314649 is about 22810.4065943595. The cubic root of 520314649 is about 804.3073135451.

The spelling of 520314649 in words is "five hundred twenty million, three hundred fourteen thousand, six hundred forty-nine".