166506153 has 16 divisors (see below), whose sum is σ = 242501376. Its totient is φ = 100783440.

The previous prime is 166506127. The next prime is 166506169. The reversal of 166506153 is 351605661.

It is not a de Polignac number, because 166506153 - 2¹⁸ = 166244009 is a prime.

It is a super-3 number, since 3×166506153³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (166506113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27150 + ... + 32712.

It is an arithmetic number, because the mean of its divisors is an integer number (15156336).

Almost surely, 2^166506153 is an apocalyptic number.

It is an amenable number.

166506153 is a deficient number, since it is larger than the sum of its proper divisors (75995223).

166506153 is a wasteful number, since it uses less digits than its factorization.

166506153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 166506153 is about 12903.7263222683. The cubic root of 166506153 is about 550.1444832535.

The spelling of 166506153 in words is "one hundred sixty-six million, five hundred six thousand, one hundred fifty-three".