22539081 has 8 divisors (see below), whose sum is σ = 30254400. Its totient is φ = 14924912.

The previous prime is 22539067. The next prime is 22539089. The reversal of 22539081 is 18093522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22539081 - 2⁹ = 22538569 is a prime.

It is a super-2 number, since 2×22539081² = 1016020344649122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22539089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24765 + ... + 25658.

It is an arithmetic number, because the mean of its divisors is an integer number (3781800).

Almost surely, 2^22539081 is an apocalyptic number.

It is an amenable number.

22539081 is a deficient number, since it is larger than the sum of its proper divisors (7715319).

22539081 is a wasteful number, since it uses less digits than its factorization.

22539081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50575.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 22539081 is about 4747.5342020885. The cubic root of 22539081 is about 282.4741658053.

The spelling of 22539081 in words is "twenty-two million, five hundred thirty-nine thousand, eighty-one".