166152291 has 4 divisors (see below), whose sum is σ = 221536392. Its totient is φ = 110768192.

The previous prime is 166152263. The next prime is 166152293. The reversal of 166152291 is 192251661.

166152291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166152291 - 2⁹ = 166151779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166152293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27692046 + ... + 27692051.

It is an arithmetic number, because the mean of its divisors is an integer number (55384098).

Almost surely, 2^166152291 is an apocalyptic number.

166152291 is a deficient number, since it is larger than the sum of its proper divisors (55384101).

166152291 is an equidigital number, since it uses as much as digits as its factorization.

166152291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55384100.

The product of its digits is 6480, while the sum is 33.

The square root of 166152291 is about 12890.0074088419. The cubic root of 166152291 is about 549.7544810507.

The spelling of 166152291 in words is "one hundred sixty-six million, one hundred fifty-two thousand, two hundred ninety-one".