2503881 has 6 divisors (see below), whose sum is σ = 3616730. Its totient is φ = 1669248.

The previous prime is 2503873. The next prime is 2503883. The reversal of 2503881 is 1883052.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1798281 + 705600 = 1341^2 + 840^2 .

It is not a de Polignac number, because 2503881 - 2³ = 2503873 is a prime.

It is a super-2 number, since 2×2503881² = 12538840124322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2503883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139096 + ... + 139113.

2^2503881 is an apocalyptic number.

It is an amenable number.

2503881 is a deficient number, since it is larger than the sum of its proper divisors (1112849).

2503881 is a wasteful number, since it uses less digits than its factorization.

2503881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278215 (or 278212 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2503881 is about 1582.3656341061. The cubic root of 2503881 is about 135.7910755506.

The spelling of 2503881 in words is "two million, five hundred three thousand, eight hundred eighty-one".