2173149 has 28 divisors (see below), whose sum is σ = 3567552. Its totient is φ = 1312200.

The previous prime is 2173141. The next prime is 2173151. The reversal of 2173149 is 9413712.

It is not a de Polignac number, because 2173149 - 2³ = 2173141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173141) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7884 + ... + 8154.

2^2173149 is an apocalyptic number.

It is an amenable number.

2173149 is a deficient number, since it is larger than the sum of its proper divisors (1394403).

2173149 is an equidigital number, since it uses as much as digits as its factorization.

2173149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 285 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2173149 is about 1474.1604390296. The cubic root of 2173149 is about 129.5278533629.

The spelling of 2173149 in words is "two million, one hundred seventy-three thousand, one hundred forty-nine".