2155127 has 4 divisors (see below), whose sum is σ = 2320920. Its totient is φ = 1989336.

The previous prime is 2155121. The next prime is 2155129. The reversal of 2155127 is 7215512.

It is a happy number.

2155127 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 2155127 - 2⁸ = 2154871 is a prime.

It is a super-2 number, since 2×2155127² = 9289144772258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155121) 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 in 3 ways as a sum of consecutive naturals, for example, 82877 + ... + 82902.

It is an arithmetic number, because the mean of its divisors is an integer number (580230).

2^2155127 is an apocalyptic number.

2155127 is a deficient number, since it is larger than the sum of its proper divisors (165793).

2155127 is a wasteful number, since it uses less digits than its factorization.

2155127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165792.

The product of its digits is 700, while the sum is 23.

The square root of 2155127 is about 1468.0350813247. The cubic root of 2155127 is about 129.1687993173.

The spelling of 2155127 in words is "two million, one hundred fifty-five thousand, one hundred twenty-seven".