2456591 has 2 divisors, whose sum is σ = 2456592. Its totient is φ = 2456590.

The previous prime is 2456581. The next prime is 2456609. The reversal of 2456591 is 1956542.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2456591 - 2¹⁸ = 2194447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2456501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228295 + 1228296.

It is an arithmetic number, because the mean of its divisors is an integer number (1228296).

2^2456591 is an apocalyptic number.

2456591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2456591 is an equidigital number, since it uses as much as digits as its factorization.

2456591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 2456591 is about 1567.3515878704. The cubic root of 2456591 is about 134.9307555270.

The spelling of 2456591 in words is "two million, four hundred fifty-six thousand, five hundred ninety-one".