2558681 has 8 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 2400112.

The previous prime is 2558671. The next prime is 2558683. The reversal of 2558681 is 1868552.

It is a happy number.

2558681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2558681 is a prime.

It is a super-2 number, since 2×2558681² = 13093696919522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2558683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

2^2558681 is an apocalyptic number.

It is an amenable number.

2558681 is a deficient number, since it is larger than the sum of its proper divisors (162919).

2558681 is a wasteful number, since it uses less digits than its factorization.

2558681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its digits is 19200, while the sum is 35.

The square root of 2558681 is about 1599.5877593930. The cubic root of 2558681 is about 136.7745773409.

The spelling of 2558681 in words is "two million, five hundred fifty-eight thousand, six hundred eighty-one".