2538881 has 4 divisors (see below), whose sum is σ = 2580564. Its totient is φ = 2497200.

The previous prime is 2538871. The next prime is 2538883. The reversal of 2538881 is 1888352.

2538881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 2076481 = 680^2 + 1441^2 .

It is a cyclic number.

It is not a de Polignac number, because 2538881 - 2⁶ = 2538817 is a prime.

It is a super-2 number, since 2×2538881² = 12891833464322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2538883) 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 3 ways as a sum of consecutive naturals, for example, 20750 + ... + 20871.

It is an arithmetic number, because the mean of its divisors is an integer number (645141).

2^2538881 is an apocalyptic number.

It is an amenable number.

2538881 is a deficient number, since it is larger than the sum of its proper divisors (41683).

2538881 is an equidigital number, since it uses as much as digits as its factorization.

2538881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41682.

The product of its digits is 15360, while the sum is 35.

The square root of 2538881 is about 1593.3866448543. The cubic root of 2538881 is about 136.4208596335.

The spelling of 2538881 in words is "two million, five hundred thirty-eight thousand, eight hundred eighty-one".