505156 has 12 divisors (see below), whose sum is σ = 903168. Its totient is φ = 247112.

The previous prime is 505139. The next prime is 505157. The reversal of 505156 is 651505.

It is an Ulam number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (505157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (75264).

2⁵⁰⁵¹⁵⁶ is an apocalyptic number.

It is an amenable number.

505156 is a deficient number, since it is larger than the sum of its proper divisors (398012).

505156 is a wasteful number, since it uses less digits than its factorization.

505156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 505156 is about 710.7432729193. The cubic root of 505156 is about 79.6419414838.

The spelling of 505156 in words is "five hundred five thousand, one hundred fifty-six".