505372855 has 24 divisors (see below), whose sum is σ = 693800352. Its totient is φ = 351232512.

The previous prime is 505372853. The next prime is 505372867. The reversal of 505372855 is 558273505.

It is a happy number.

It is not a de Polignac number, because 505372855 - 2¹ = 505372853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505372853) 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 in 23 ways as a sum of consecutive naturals, for example, 5334 + ... + 32236.

It is an arithmetic number, because the mean of its divisors is an integer number (28908348).

Almost surely, 2^505372855 is an apocalyptic number.

505372855 is a deficient number, since it is larger than the sum of its proper divisors (188427497).

505372855 is a wasteful number, since it uses less digits than its factorization.

505372855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26955 (or 26938 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The square root of 505372855 is about 22480.4994384022. The cubic root of 505372855 is about 796.5333617010.

The spelling of 505372855 in words is "five hundred five million, three hundred seventy-two thousand, eight hundred fifty-five".