252661166 has 16 divisors (see below), whose sum is σ = 395159040. Its totient is φ = 121010400.

The previous prime is 252661153. The next prime is 252661169. The reversal of 252661166 is 661166252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252661169) 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 7 ways as a sum of consecutive naturals, for example, 9785 + ... + 24516.

It is an arithmetic number, because the mean of its divisors is an integer number (24697440).

Almost surely, 2^252661166 is an apocalyptic number.

252661166 is a deficient number, since it is larger than the sum of its proper divisors (142497874).

252661166 is a wasteful number, since it uses less digits than its factorization.

252661166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34459.

The product of its digits is 25920, while the sum is 35.

The square root of 252661166 is about 15895.3189964845. The cubic root of 252661166 is about 632.1878797692.

The spelling of 252661166 in words is "two hundred fifty-two million, six hundred sixty-one thousand, one hundred sixty-six".