2172573 has 24 divisors (see below), whose sum is σ = 3494400. Its totient is φ = 1291680.

The previous prime is 2172571. The next prime is 2172581. The reversal of 2172573 is 3752712.

2172573 is a `hidden beast` number, since 21 + 72 + 573 = 666.

It is not a de Polignac number, because 2172573 - 2¹ = 2172571 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 1 + 7³ + 2¹⁶ + 5⁸ + 7⁶ + 3¹³ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3328 + ... + 3926.

It is an arithmetic number, because the mean of its divisors is an integer number (145600).

2^2172573 is an apocalyptic number.

It is an amenable number.

2172573 is a deficient number, since it is larger than the sum of its proper divisors (1321827).

2172573 is a wasteful number, since it uses less digits than its factorization.

2172573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 646 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 2172573 is about 1473.9650606442. The cubic root of 2172573 is about 129.5164084296.

The spelling of 2172573 in words is "two million, one hundred seventy-two thousand, five hundred seventy-three".