2543494 has 4 divisors (see below), whose sum is σ = 3815244. Its totient is φ = 1271746.

The previous prime is 2543479. The next prime is 2543507. The reversal of 2543494 is 4943452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635872 + ... + 635875.

It is an arithmetic number, because the mean of its divisors is an integer number (953811).

2^2543494 is an apocalyptic number.

2543494 is a deficient number, since it is larger than the sum of its proper divisors (1271750).

2543494 is a wasteful number, since it uses less digits than its factorization.

2543494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271749.

The product of its digits is 17280, while the sum is 31.

The square root of 2543494 is about 1594.8335336329. The cubic root of 2543494 is about 136.5034325819.

The spelling of 2543494 in words is "two million, five hundred forty-three thousand, four hundred ninety-four".