166253153 has 12 divisors (see below), whose sum is σ = 183053220. Its totient is φ = 150881280.

The previous prime is 166253137. The next prime is 166253167. The reversal of 166253153 is 351352661.

It can be written as a sum of positive squares in 2 ways, for example, as 32341969 + 133911184 = 5687^2 + 11572^2 .

It is not a de Polignac number, because 166253153 - 2⁴ = 166253137 is a prime.

It is a super-2 number, since 2×166253153² = 55280221764882818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166253123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136001 + ... + 137217.

It is an arithmetic number, because the mean of its divisors is an integer number (15254435).

Almost surely, 2^166253153 is an apocalyptic number.

It is an amenable number.

166253153 is a deficient number, since it is larger than the sum of its proper divisors (16800067).

166253153 is a wasteful number, since it uses less digits than its factorization.

166253153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368 (or 2357 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 166253153 is about 12893.9192257436. The cubic root of 166253153 is about 549.8657005426.

The spelling of 166253153 in words is "one hundred sixty-six million, two hundred fifty-three thousand, one hundred fifty-three".