505428727 has 2 divisors, whose sum is σ = 505428728. Its totient is φ = 505428726.

The previous prime is 505428701. The next prime is 505428739. The reversal of 505428727 is 727824505.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505428727 - 2²³ = 497040119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505428727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505428227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252714363 + 252714364.

It is an arithmetic number, because the mean of its divisors is an integer number (252714364).

Almost surely, 2^505428727 is an apocalyptic number.

505428727 is a deficient number, since it is larger than the sum of its proper divisors (1).

505428727 is an equidigital number, since it uses as much as digits as its factorization.

505428727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 505428727 is about 22481.7420810755. The cubic root of 505428727 is about 796.5627144661.

The spelling of 505428727 in words is "five hundred five million, four hundred twenty-eight thousand, seven hundred twenty-seven".