166081254 has 16 divisors (see below), whose sum is σ = 332806320. Its totient is φ = 55253120.

The previous prime is 166081219. The next prime is 166081259. The reversal of 166081254 is 452180661.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166081259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23439 + ... + 29690.

It is an arithmetic number, because the mean of its divisors is an integer number (20800395).

Almost surely, 2^166081254 is an apocalyptic number.

166081254 is an abundant number, since it is smaller than the sum of its proper divisors (166725066).

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

166081254 is a wasteful number, since it uses less digits than its factorization.

166081254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53655.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 166081254 is about 12887.2516076936. The cubic root of 166081254 is about 549.6761222637.

The spelling of 166081254 in words is "one hundred sixty-six million, eighty-one thousand, two hundred fifty-four".