2543290 has 8 divisors (see below), whose sum is σ = 4577940. Its totient is φ = 1017312.

The previous prime is 2543287. The next prime is 2543309. The reversal of 2543290 is 923452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2082249 + 461041 = 1443^2 + 679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127155 + ... + 127174.

2^2543290 is an apocalyptic number.

2543290 is a deficient number, since it is larger than the sum of its proper divisors (2034650).

2543290 is a wasteful number, since it uses less digits than its factorization.

2543290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254336.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2543290 is about 1594.7695758322. The cubic root of 2543290 is about 136.4997830819.

The spelling of 2543290 in words is "two million, five hundred forty-three thousand, two hundred ninety".