504240991 has 2 divisors, whose sum is σ = 504240992. Its totient is φ = 504240990.

The previous prime is 504240977. The next prime is 504241007. The reversal of 504240991 is 199042405.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 504240991 - 2¹⁵ = 504208223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504240931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252120495 + 252120496.

It is an arithmetic number, because the mean of its divisors is an integer number (252120496).

Almost surely, 2^504240991 is an apocalyptic number.

504240991 is a deficient number, since it is larger than the sum of its proper divisors (1).

504240991 is an equidigital number, since it uses as much as digits as its factorization.

504240991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 504240991 is about 22455.3109753573. The cubic root of 504240991 is about 795.9382622378.

The spelling of 504240991 in words is "five hundred four million, two hundred forty thousand, nine hundred ninety-one".