2597489591 has 2 divisors, whose sum is σ = 2597489592. Its totient is φ = 2597489590.

The previous prime is 2597489581. The next prime is 2597489593. The reversal of 2597489591 is 1959847952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2597489591 - 2⁶ = 2597489527 is a prime.

Together with 2597489593, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2597489591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2597489593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1298744795 + 1298744796.

It is an arithmetic number, because the mean of its divisors is an integer number (1298744796).

Almost surely, 2^2597489591 is an apocalyptic number.

2597489591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2597489591 is an equidigital number, since it uses as much as digits as its factorization.

2597489591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 59.

The square root of 2597489591 is about 50965.5726054363. The cubic root of 2597489591 is about 1374.6261623475.

The spelling of 2597489591 in words is "two billion, five hundred ninety-seven million, four hundred eighty-nine thousand, five hundred ninety-one".