505504691 has 2 divisors, whose sum is σ = 505504692. Its totient is φ = 505504690.

The previous prime is 505504679. The next prime is 505504723. The reversal of 505504691 is 196405505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505504691 - 2⁶ = 505504627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (505504661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252752345 + 252752346.

It is an arithmetic number, because the mean of its divisors is an integer number (252752346).

Almost surely, 2^505504691 is an apocalyptic number.

505504691 is a deficient number, since it is larger than the sum of its proper divisors (1).

505504691 is an equidigital number, since it uses as much as digits as its factorization.

505504691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 505504691 is about 22483.4314774235. The cubic root of 505504691 is about 796.6026192410.

The spelling of 505504691 in words is "five hundred five million, five hundred four thousand, six hundred ninety-one".