2553491 has 2 divisors, whose sum is σ = 2553492. Its totient is φ = 2553490.

The previous prime is 2553457. The next prime is 2553497. The reversal of 2553491 is 1943552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2553491 - 2⁶ = 2553427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2553497) by changing a digit.

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 as a sum of consecutive naturals, namely, 1276745 + 1276746.

It is an arithmetic number, because the mean of its divisors is an integer number (1276746).

2^2553491 is an apocalyptic number.

2553491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2553491 is an equidigital number, since it uses as much as digits as its factorization.

2553491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 2553491 is about 1597.9646429130. The cubic root of 2553491 is about 136.6820374014.

The spelling of 2553491 in words is "two million, five hundred fifty-three thousand, four hundred ninety-one".