507232991 has 2 divisors, whose sum is σ = 507232992. Its totient is φ = 507232990.

The previous prime is 507232969. The next prime is 507232993. The reversal of 507232991 is 199232705.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 507232991 - 2¹⁸ = 506970847 is a prime.

It is a Sophie Germain prime.

Together with 507232993, 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 (507232993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253616495 + 253616496.

It is an arithmetic number, because the mean of its divisors is an integer number (253616496).

Almost surely, 2^507232991 is an apocalyptic number.

507232991 is a deficient number, since it is larger than the sum of its proper divisors (1).

507232991 is an equidigital number, since it uses as much as digits as its factorization.

507232991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 507232991 is about 22521.8336509264. The cubic root of 507232991 is about 797.5094372301.

The spelling of 507232991 in words is "five hundred seven million, two hundred thirty-two thousand, nine hundred ninety-one".