2153573 has 4 divisors (see below), whose sum is σ = 2183148. Its totient is φ = 2124000.

The previous prime is 2153563. The next prime is 2153621. The reversal of 2153573 is 3753512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 1117249 = 1018^2 + 1057^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153573 - 2⁸ = 2153317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153563) 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, 14678 + ... + 14823.

It is an arithmetic number, because the mean of its divisors is an integer number (545787).

2^2153573 is an apocalyptic number.

It is an amenable number.

2153573 is a deficient number, since it is larger than the sum of its proper divisors (29575).

2153573 is an equidigital number, since it uses as much as digits as its factorization.

2153573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29574.

The product of its digits is 3150, while the sum is 26.

The square root of 2153573 is about 1467.5057069736. The cubic root of 2153573 is about 129.1377452186.

The spelling of 2153573 in words is "two million, one hundred fifty-three thousand, five hundred seventy-three".