2256172 has 12 divisors (see below), whose sum is σ = 4180680. Its totient is φ = 1061696.

The previous prime is 2256169. The next prime is 2256173. The reversal of 2256172 is 2716522.

It is not an unprimeable number, because it can be changed into a prime (2256173) 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, 16522 + ... + 16657.

It is an arithmetic number, because the mean of its divisors is an integer number (348390).

2^2256172 is an apocalyptic number.

It is an amenable number.

2256172 is a deficient number, since it is larger than the sum of its proper divisors (1924508).

2256172 is a wasteful number, since it uses less digits than its factorization.

2256172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33200 (or 33198 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 2256172 is about 1502.0559243916. The cubic root of 2256172 is about 131.1567767345.

The spelling of 2256172 in words is "two million, two hundred fifty-six thousand, one hundred seventy-two".