2538549 has 18 divisors (see below), whose sum is σ = 3972930. Its totient is φ = 1561248.

The previous prime is 2538527. The next prime is 2538577. The reversal of 2538549 is 9458352.

It can be written as a sum of positive squares in 3 ways, for example, as 900 + 2537649 = 30^2 + 1593^2 .

It is not a de Polignac number, because 2538549 - 2⁷ = 2538421 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538509) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 687 + ... + 2355.

2^2538549 is an apocalyptic number.

It is an amenable number.

2538549 is a deficient number, since it is larger than the sum of its proper divisors (1434381).

2538549 is a wasteful number, since it uses less digits than its factorization.

2538549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701 (or 1685 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 2538549 is about 1593.2824608336. The cubic root of 2538549 is about 136.4149129586.

The spelling of 2538549 in words is "two million, five hundred thirty-eight thousand, five hundred forty-nine".