2585491 has 2 divisors, whose sum is σ = 2585492. Its totient is φ = 2585490.

The previous prime is 2585477. The next prime is 2585507. The reversal of 2585491 is 1945852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2585491 - 2⁵ = 2585459 is a prime.

It is a super-2 number, since 2×2585491² = 13369527422162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2582491) 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, 1292745 + 1292746.

It is an arithmetic number, because the mean of its divisors is an integer number (1292746).

2^2585491 is an apocalyptic number.

2585491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585491 is an equidigital number, since it uses as much as digits as its factorization.

2585491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 34.

The square root of 2585491 is about 1607.9462055678. The cubic root of 2585491 is about 137.2506290041.

The spelling of 2585491 in words is "two million, five hundred eighty-five thousand, four hundred ninety-one".