2578081 has 8 divisors (see below), whose sum is σ = 2852928. Its totient is φ = 2310000.

The previous prime is 2578061. The next prime is 2578087. The reversal of 2578081 is 1808752.

2578081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 656-th star number.

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

It is not a de Polignac number, because 2578081 - 2⁹ = 2577569 is a prime.

It is a super-2 number, since 2×2578081² = 13293003285122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578087) 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, 870 + ... + 2431.

It is an arithmetic number, because the mean of its divisors is an integer number (356616).

2^2578081 is an apocalyptic number.

It is an amenable number.

2578081 is a deficient number, since it is larger than the sum of its proper divisors (274847).

2578081 is a wasteful number, since it uses less digits than its factorization.

2578081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2578081 is about 1605.6403706933. The cubic root of 2578081 is about 137.1193837450.

It can be divided in two parts, 257 and 8081, that added together give a palindrome (8338).

The spelling of 2578081 in words is "two million, five hundred seventy-eight thousand, eighty-one".