2558081 has 2 divisors, whose sum is σ = 2558082. Its totient is φ = 2558080.

The previous prime is 2558077. The next prime is 2558093. The reversal of 2558081 is 1808552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 919681 = 1280^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 2558081 - 2² = 2558077 is a prime.

It is a super-2 number, since 2×2558081² = 13087556805122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2558011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279040 + 1279041.

It is an arithmetic number, because the mean of its divisors is an integer number (1279041).

2^2558081 is an apocalyptic number.

It is an amenable number.

2558081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2558081 is an equidigital number, since it uses as much as digits as its factorization.

2558081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 2558081 is about 1599.4002000750. The cubic root of 2558081 is about 136.7638854829.

It can be divided in two parts, 25 and 58081, that multiplied together give a square (1452025 = 1205²).

The spelling of 2558081 in words is "two million, five hundred fifty-eight thousand, eighty-one".