2172973 has 16 divisors (see below), whose sum is σ = 2571840. Its totient is φ = 1814400.

The previous prime is 2172967. The next prime is 2172977. The reversal of 2172973 is 3792712.

It is a cyclic number.

It is not a de Polignac number, because 2172973 - 2⁹ = 2172461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7593 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (160740).

2^2172973 is an apocalyptic number.

It is an amenable number.

2172973 is a deficient number, since it is larger than the sum of its proper divisors (398867).

2172973 is a wasteful number, since it uses less digits than its factorization.

2172973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348.

The product of its digits is 5292, while the sum is 31.

The square root of 2172973 is about 1474.1007428259. The cubic root of 2172973 is about 129.5243565145.

The spelling of 2172973 in words is "two million, one hundred seventy-two thousand, nine hundred seventy-three".