2233581 has 32 divisors (see below), whose sum is σ = 3637248. Its totient is φ = 1192320.

The previous prime is 2233573. The next prime is 2233597. The reversal of 2233581 is 1853322.

It is not a de Polignac number, because 2233581 - 2³ = 2233573 is a prime.

It is a super-2 number, since 2×2233581² = 9977768167122, which contains 22 as substring.

2233581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2233501) 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, 30561 + ... + 30633.

It is an arithmetic number, because the mean of its divisors is an integer number (113664).

2^2233581 is an apocalyptic number.

2233581 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2233581 is a deficient number, since it is larger than the sum of its proper divisors (1403667).

2233581 is a wasteful number, since it uses less digits than its factorization.

2233581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161.

The product of its digits is 1440, while the sum is 24.

The square root of 2233581 is about 1494.5169788263. The cubic root of 2233581 is about 130.7175508413.

The spelling of 2233581 in words is "two million, two hundred thirty-three thousand, five hundred eighty-one".