2166151 has 4 divisors (see below), whose sum is σ = 2332792. Its totient is φ = 1999512.

The previous prime is 2166137. The next prime is 2166161. The reversal of 2166151 is 1516612.

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 2166151 - 2⁵ = 2166119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166121) 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, 83301 + ... + 83326.

It is an arithmetic number, because the mean of its divisors is an integer number (583198).

2^2166151 is an apocalyptic number.

2166151 is a deficient number, since it is larger than the sum of its proper divisors (166641).

2166151 is a wasteful number, since it uses less digits than its factorization.

2166151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166640.

The product of its digits is 360, while the sum is 22.

The square root of 2166151 is about 1471.7849707073. The cubic root of 2166151 is about 129.3886681476.

It can be divided in two parts, 21661 and 51, that added together give a palindrome (21712).

The spelling of 2166151 in words is "two million, one hundred sixty-six thousand, one hundred fifty-one".