2543251 has 4 divisors (see below), whose sum is σ = 2692872. Its totient is φ = 2393632.

The previous prime is 2543249. The next prime is 2543257. The reversal of 2543251 is 1523452.

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

It is a cyclic number.

It is not a de Polignac number, because 2543251 - 2¹ = 2543249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74785 + ... + 74818.

It is an arithmetic number, because the mean of its divisors is an integer number (673218).

2^2543251 is an apocalyptic number.

2543251 is a deficient number, since it is larger than the sum of its proper divisors (149621).

2543251 is a wasteful number, since it uses less digits than its factorization.

2543251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149620.

The product of its digits is 1200, while the sum is 22.

The square root of 2543251 is about 1594.7573483135. The cubic root of 2543251 is about 136.4990853611.

The spelling of 2543251 in words is "two million, five hundred forty-three thousand, two hundred fifty-one".