2605081 has 2 divisors, whose sum is σ = 2605082. Its totient is φ = 2605080.

The previous prime is 2605073. The next prime is 2605087. The reversal of 2605081 is 1805062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2374681 + 230400 = 1541^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605081 - 2³ = 2605073 is a prime.

It is a super-2 number, since 2×2605081² = 13572894033122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2605087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302540 + 1302541.

It is an arithmetic number, because the mean of its divisors is an integer number (1302541).

2^2605081 is an apocalyptic number.

It is an amenable number.

2605081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605081 is an equidigital number, since it uses as much as digits as its factorization.

2605081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2605081 is about 1614.0263318794. The cubic root of 2605081 is about 137.5964018180.

The spelling of 2605081 in words is "two million, six hundred five thousand, eighty-one".