2573645 has 8 divisors (see below), whose sum is σ = 3251040. Its totient is φ = 1950480.

The previous prime is 2573633. The next prime is 2573653. The reversal of 2573645 is 5463752.

2573645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2573645 - 2¹⁰ = 2572621 is a prime.

It is a super-3 number, since 3×2573645³ = 51140760195540933375, which contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13451 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (406380).

2^2573645 is an apocalyptic number.

It is an amenable number.

2573645 is a deficient number, since it is larger than the sum of its proper divisors (677395).

2573645 is a wasteful number, since it uses less digits than its factorization.

2573645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27115.

The product of its digits is 25200, while the sum is 32.

The square root of 2573645 is about 1604.2583956458. The cubic root of 2573645 is about 137.0406933301.

The spelling of 2573645 in words is "two million, five hundred seventy-three thousand, six hundred forty-five".