2545623 has 6 divisors (see below), whose sum is σ = 3677024. Its totient is φ = 1697076.

The previous prime is 2545619. The next prime is 2545633. The reversal of 2545623 is 3265452.

It is not a de Polignac number, because 2545623 - 2² = 2545619 is a prime.

It is a Duffinian number.

2545623 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141415 + ... + 141432.

2^2545623 is an apocalyptic number.

2545623 is a deficient number, since it is larger than the sum of its proper divisors (1131401).

2545623 is a wasteful number, since it uses less digits than its factorization.

2545623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282853 (or 282850 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 2545623 is about 1595.5008617986. The cubic root of 2545623 is about 136.5415081269.

The spelling of 2545623 in words is "two million, five hundred forty-five thousand, six hundred twenty-three".