2881521 has 32 divisors (see below), whose sum is σ = 4636800. Its totient is φ = 1762560.

The previous prime is 2881513. The next prime is 2881531. The reversal of 2881521 is 1251882.

It is not a de Polignac number, because 2881521 - 2³ = 2881513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2881531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20965 + ... + 21101.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2^2881521 is an apocalyptic number.

It is an amenable number.

2881521 is a deficient number, since it is larger than the sum of its proper divisors (1755279).

2881521 is a wasteful number, since it uses less digits than its factorization.

2881521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 200 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 2881521 is about 1697.5043446189. The cubic root of 2881521 is about 142.3007742287.

The spelling of 2881521 in words is "two million, eight hundred eighty-one thousand, five hundred twenty-one".