505325166 has 16 divisors (see below), whose sum is σ = 1015442688. Its totient is φ = 167643000.

The previous prime is 505325131. The next prime is 505325173. The reversal of 505325166 is 661523505.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 198310 + ... + 200841.

It is an arithmetic number, because the mean of its divisors is an integer number (63465168).

Almost surely, 2^505325166 is an apocalyptic number.

505325166 is an abundant number, since it is smaller than the sum of its proper divisors (510117522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505325166 is a wasteful number, since it uses less digits than its factorization.

505325166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399367.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 505325166 is about 22479.4387385451. The cubic root of 505325166 is about 796.5083062237.

It can be divided in two parts, 50 and 5325166, that added together give a triangular number (5325216 = T₃₂₆₃).

The spelling of 505325166 in words is "five hundred five million, three hundred twenty-five thousand, one hundred sixty-six".