509507023 has 2 divisors, whose sum is σ = 509507024. Its totient is φ = 509507022.

The previous prime is 509506993. The next prime is 509507027. The reversal of 509507023 is 320705905.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509507023 - 2²¹ = 507409871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509507027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254753511 + 254753512.

It is an arithmetic number, because the mean of its divisors is an integer number (254753512).

Almost surely, 2^509507023 is an apocalyptic number.

509507023 is a deficient number, since it is larger than the sum of its proper divisors (1).

509507023 is an equidigital number, since it uses as much as digits as its factorization.

509507023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 509507023 is about 22572.2622481664. The cubic root of 509507023 is about 798.6994613740.

The spelling of 509507023 in words is "five hundred nine million, five hundred seven thousand, twenty-three".