22505541 has 8 divisors (see below), whose sum is σ = 30090624. Its totient is φ = 14962080.

The previous prime is 22505521. The next prime is 22505551. The reversal of 22505541 is 14550522.

It is a happy number.

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

It is not a de Polignac number, because 22505541 - 2¹¹ = 22503493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505521) 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, 9120 + ... + 11321.

It is an arithmetic number, because the mean of its divisors is an integer number (3761328).

Almost surely, 2^22505541 is an apocalyptic number.

It is an amenable number.

22505541 is a deficient number, since it is larger than the sum of its proper divisors (7585083).

22505541 is a wasteful number, since it uses less digits than its factorization.

22505541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20811.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 22505541 is about 4744.0005269814. Note that the first 3 decimals coincide. The cubic root of 22505541 is about 282.3339813428. Note that the first 3 decimals are identical.

The spelling of 22505541 in words is "twenty-two million, five hundred five thousand, five hundred forty-one".