513445799 has 2 divisors, whose sum is σ = 513445800. Its totient is φ = 513445798.

The previous prime is 513445787. The next prime is 513445817. The reversal of 513445799 is 997544315.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513445799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513445739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256722899 + 256722900.

It is an arithmetic number, because the mean of its divisors is an integer number (256722900).

Almost surely, 2^513445799 is an apocalyptic number.

513445799 is a deficient number, since it is larger than the sum of its proper divisors (1).

513445799 is an equidigital number, since it uses as much as digits as its factorization.

513445799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 513445799 is about 22659.3424220563. The cubic root of 513445799 is about 800.7523126229.

The spelling of 513445799 in words is "five hundred thirteen million, four hundred forty-five thousand, seven hundred ninety-nine".