520345699 has 2 divisors, whose sum is σ = 520345700. Its totient is φ = 520345698.

The previous prime is 520345691. The next prime is 520345703. The reversal of 520345699 is 996543025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520345699 - 2³ = 520345691 is a prime.

It is not a weakly prime, because it can be changed into another prime (520345691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260172849 + 260172850.

It is an arithmetic number, because the mean of its divisors is an integer number (260172850).

Almost surely, 2^520345699 is an apocalyptic number.

520345699 is a deficient number, since it is larger than the sum of its proper divisors (1).

520345699 is an equidigital number, since it uses as much as digits as its factorization.

520345699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 520345699 is about 22811.0871946078. The cubic root of 520345699 is about 804.3233123550.

The spelling of 520345699 in words is "five hundred twenty million, three hundred forty-five thousand, six hundred ninety-nine".