2539881 has 12 divisors (see below), whose sum is σ = 3754608. Its totient is φ = 1653624.

The previous prime is 2539871. The next prime is 2539951. The reversal of 2539881 is 1889352.

It is not a de Polignac number, because 2539881 - 2⁷ = 2539753 is a prime.

It is a super-2 number, since 2×2539881² = 12901990988322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2539841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2895 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (312884).

2^2539881 is an apocalyptic number.

It is an amenable number.

2539881 is a deficient number, since it is larger than the sum of its proper divisors (1214727).

2539881 is a wasteful number, since it uses less digits than its factorization.

2539881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612 (or 6609 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2539881 is about 1593.7004109932. The cubic root of 2539881 is about 136.4387681730.

The spelling of 2539881 in words is "two million, five hundred thirty-nine thousand, eight hundred eighty-one".