2549291 has 2 divisors, whose sum is σ = 2549292. Its totient is φ = 2549290.

The previous prime is 2549279. The next prime is 2549293. The reversal of 2549291 is 1929452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2549291 is a prime.

Together with 2549293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2549293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274645 + 1274646.

It is an arithmetic number, because the mean of its divisors is an integer number (1274646).

2^2549291 is an apocalyptic number.

2549291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2549291 is an equidigital number, since it uses as much as digits as its factorization.

2549291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 2549291 is about 1596.6499303229. The cubic root of 2549291 is about 136.6070577510.

The spelling of 2549291 in words is "two million, five hundred forty-nine thousand, two hundred ninety-one".