505155393 has 16 divisors (see below), whose sum is σ = 748843200. Its totient is φ = 336561120.

The previous prime is 505155361. The next prime is 505155403. The reversal of 505155393 is 393551505.

505155393 is a `hidden beast` number, since 5 + 0 + 515 + 53 + 93 = 666.

It is not a de Polignac number, because 505155393 - 2⁵ = 505155361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505155353) 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 in 15 ways as a sum of consecutive naturals, for example, 47293 + ... + 56981.

It is an arithmetic number, because the mean of its divisors is an integer number (46802700).

Almost surely, 2^505155393 is an apocalyptic number.

It is an amenable number.

505155393 is a deficient number, since it is larger than the sum of its proper divisors (243687807).

505155393 is a wasteful number, since it uses less digits than its factorization.

505155393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11629 (or 11623 counting only the distinct ones).

The product of its (nonzero) digits is 50625, while the sum is 36.

The square root of 505155393 is about 22475.6622371845. The cubic root of 505155393 is about 796.4190958430.

The spelling of 505155393 in words is "five hundred five million, one hundred fifty-five thousand, three hundred ninety-three".