505743307 has 2 divisors, whose sum is σ = 505743308. Its totient is φ = 505743306.

The previous prime is 505743281. The next prime is 505743313. The reversal of 505743307 is 703347505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505743307 is a prime.

It is not a weakly prime, because it can be changed into another prime (505743347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252871653 + 252871654.

It is an arithmetic number, because the mean of its divisors is an integer number (252871654).

Almost surely, 2^505743307 is an apocalyptic number.

505743307 is a deficient number, since it is larger than the sum of its proper divisors (1).

505743307 is an equidigital number, since it uses as much as digits as its factorization.

505743307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 34.

The square root of 505743307 is about 22488.7373367204. The cubic root of 505743307 is about 796.7279410124.

The spelling of 505743307 in words is "five hundred five million, seven hundred forty-three thousand, three hundred seven".