2172151 has 2 divisors, whose sum is σ = 2172152. Its totient is φ = 2172150.

The previous prime is 2172113. The next prime is 2172161. The reversal of 2172151 is 1512712.

2172151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172151 - 2⁹ = 2171639 is a prime.

2172151 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086075 + 1086076.

It is an arithmetic number, because the mean of its divisors is an integer number (1086076).

2^2172151 is an apocalyptic number.

2172151 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172151 is an equidigital number, since it uses as much as digits as its factorization.

2172151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140, while the sum is 19.

The square root of 2172151 is about 1473.8219024021. The cubic root of 2172151 is about 129.5080221423.

Adding to 2172151 its reverse (1512712), we get a palindrome (3684863).

The spelling of 2172151 in words is "two million, one hundred seventy-two thousand, one hundred fifty-one".