505475131 has 6 divisors (see below), whose sum is σ = 588001740. Its totient is φ = 433264356.

The previous prime is 505475111. The next prime is 505475137. The reversal of 505475131 is 131574505.

It is a de Polignac number, because none of the positive numbers 2^k-505475131 is a prime.

It is a super-2 number, since 2×505475131² = 511010216118934322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505475093 and 505475102.

It is not an unprimeable number, because it can be changed into a prime (505475137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5157861 + ... + 5157958.

It is an arithmetic number, because the mean of its divisors is an integer number (98000290).

Almost surely, 2^505475131 is an apocalyptic number.

505475131 is a deficient number, since it is larger than the sum of its proper divisors (82526609).

505475131 is a wasteful number, since it uses less digits than its factorization.

505475131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315833 (or 10315826 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 505475131 is about 22482.7740948487. The cubic root of 505475131 is about 796.5870915035.

The spelling of 505475131 in words is "five hundred five million, four hundred seventy-five thousand, one hundred thirty-one".