2885121 has 24 divisors (see below), whose sum is σ = 4478760. Its totient is φ = 1783296.

The previous prime is 2885119. The next prime is 2885173. The reversal of 2885121 is 1215882.

It can be written as a sum of positive squares in 4 ways, for example, as 1718721 + 1166400 = 1311^2 + 1080^2 .

It is not a de Polignac number, because 2885121 - 2¹ = 2885119 is a prime.

2885121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2885101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16591 + ... + 16763.

It is an arithmetic number, because the mean of its divisors is an integer number (186615).

2^2885121 is an apocalyptic number.

2885121 is the 981-st octagonal number.

It is an amenable number.

2885121 is a deficient number, since it is larger than the sum of its proper divisors (1593639).

2885121 is a wasteful number, since it uses less digits than its factorization.

2885121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 302 counting only the distinct ones).

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

The square root of 2885121 is about 1698.5643938338. The cubic root of 2885121 is about 142.3600102591.

The spelling of 2885121 in words is "two million, eight hundred eighty-five thousand, one hundred twenty-one".