513765023 has 2 divisors, whose sum is σ = 513765024. Its totient is φ = 513765022.

The previous prime is 513765011. The next prime is 513765029. The reversal of 513765023 is 320567315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513765023 - 2¹⁴ = 513748639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513765029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256882511 + 256882512.

It is an arithmetic number, because the mean of its divisors is an integer number (256882512).

Almost surely, 2^513765023 is an apocalyptic number.

513765023 is a deficient number, since it is larger than the sum of its proper divisors (1).

513765023 is an equidigital number, since it uses as much as digits as its factorization.

513765023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 513765023 is about 22666.3853095283. The cubic root of 513765023 is about 800.9182284798.

The spelling of 513765023 in words is "five hundred thirteen million, seven hundred sixty-five thousand, twenty-three".