505255131 has 32 divisors (see below), whose sum is σ = 766617600. Its totient is φ = 328782240.

The previous prime is 505255129. The next prime is 505255183. The reversal of 505255131 is 131552505.

505255131 is a `hidden beast` number, since 5 + 0 + 525 + 5 + 131 = 666.

It is not a de Polignac number, because 505255131 - 2¹ = 505255129 is a prime.

It is a super-2 number, since 2×505255131² = 510565494803654322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 505255095 and 505255104.

It is not an unprimeable number, because it can be changed into a prime (505253131) 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 31 ways as a sum of consecutive naturals, for example, 227830 + ... + 230036.

It is an arithmetic number, because the mean of its divisors is an integer number (23956800).

Almost surely, 2^505255131 is an apocalyptic number.

505255131 is a deficient number, since it is larger than the sum of its proper divisors (261362469).

505255131 is a wasteful number, since it uses less digits than its factorization.

505255131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 2410 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 505255131 is about 22477.8809277031. The cubic root of 505255131 is about 796.4715074518.

The spelling of 505255131 in words is "five hundred five million, two hundred fifty-five thousand, one hundred thirty-one".