509632997 has 2 divisors, whose sum is σ = 509632998. Its totient is φ = 509632996.

The previous prime is 509632969. The next prime is 509632999. The reversal of 509632997 is 799236905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496665796 + 12967201 = 22286^2 + 3601^2 .

It is a cyclic number.

It is not a de Polignac number, because 509632997 - 2⁸ = 509632741 is a prime.

Together with 509632999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509632999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254816498 + 254816499.

It is an arithmetic number, because the mean of its divisors is an integer number (254816499).

Almost surely, 2^509632997 is an apocalyptic number.

It is an amenable number.

509632997 is a deficient number, since it is larger than the sum of its proper divisors (1).

509632997 is an equidigital number, since it uses as much as digits as its factorization.

509632997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 509632997 is about 22575.0525359300. The cubic root of 509632997 is about 798.7652812549.

The spelling of 509632997 in words is "five hundred nine million, six hundred thirty-two thousand, nine hundred ninety-seven".