505555723 has 2 divisors, whose sum is σ = 505555724. Its totient is φ = 505555722.

The previous prime is 505555717. The next prime is 505555727. The reversal of 505555723 is 327555505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505555723 - 2¹³ = 505547531 is a prime.

It is not a weakly prime, because it can be changed into another prime (505555727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252777861 + 252777862.

It is an arithmetic number, because the mean of its divisors is an integer number (252777862).

Almost surely, 2^505555723 is an apocalyptic number.

505555723 is a deficient number, since it is larger than the sum of its proper divisors (1).

505555723 is an equidigital number, since it uses as much as digits as its factorization.

505555723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131250, while the sum is 37.

The square root of 505555723 is about 22484.5663289288. The cubic root of 505555723 is about 796.6294247008.

The spelling of 505555723 in words is "five hundred five million, five hundred fifty-five thousand, seven hundred twenty-three".