2645249 has 4 divisors (see below), whose sum is σ = 2656836. Its totient is φ = 2633664.

The previous prime is 2645239. The next prime is 2645257. The reversal of 2645249 is 9425462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9425462 = 2 ⋅4712731.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 2016400 = 793^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645249 - 2⁴ = 2645233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645219) 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, 5444 + ... + 5909.

It is an arithmetic number, because the mean of its divisors is an integer number (664209).

2^2645249 is an apocalyptic number.

It is an amenable number.

2645249 is a deficient number, since it is larger than the sum of its proper divisors (11587).

2645249 is a wasteful number, since it uses less digits than its factorization.

2645249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11586.

The product of its digits is 17280, while the sum is 32.

The square root of 2645249 is about 1626.4221469225. The cubic root of 2645249 is about 138.3000019693.

The spelling of 2645249 in words is "two million, six hundred forty-five thousand, two hundred forty-nine".