2145255 has 16 divisors (see below), whose sum is σ = 3922944. Its totient is φ = 980640.

The previous prime is 2145239. The next prime is 2145263. The reversal of 2145255 is 5525412.

It is a happy number.

It is not a de Polignac number, because 2145255 - 2⁴ = 2145239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10111 + ... + 10320.

It is an arithmetic number, because the mean of its divisors is an integer number (245184).

2^2145255 is an apocalyptic number.

2145255 is a deficient number, since it is larger than the sum of its proper divisors (1777689).

2145255 is a wasteful number, since it uses less digits than its factorization.

2145255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20446.

The product of its digits is 2000, while the sum is 24.

The square root of 2145255 is about 1464.6689045651. The cubic root of 2145255 is about 128.9712693663.

The spelling of 2145255 in words is "two million, one hundred forty-five thousand, two hundred fifty-five".