2499543 has 12 divisors (see below), whose sum is σ = 3631680. Its totient is φ = 1656576.

The previous prime is 2499521. The next prime is 2499551. The reversal of 2499543 is 3459942.

2499543 is a `hidden beast` number, since 24 + 99 + 543 = 666.

It is not a de Polignac number, because 2499543 - 2¹³ = 2491351 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 zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 2499498 and 2499507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (302640).

2^2499543 is an apocalyptic number.

2499543 is a deficient number, since it is larger than the sum of its proper divisors (1132137).

2499543 is a wasteful number, since it uses less digits than its factorization.

2499543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1635 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2499543 is about 1580.9943073901. The cubic root of 2499543 is about 135.7126104001.

The spelling of 2499543 in words is "two million, four hundred ninety-nine thousand, five hundred forty-three".