22541550 has 48 divisors (see below), whose sum is σ = 56484480. Its totient is φ = 5948640.

The previous prime is 22541549. The next prime is 22541567. The reversal of 22541550 is 5514522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22541550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14721 + ... + 16179.

It is an arithmetic number, because the mean of its divisors is an integer number (1176760).

Almost surely, 2^22541550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22541550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28242240).

22541550 is an abundant number, since it is smaller than the sum of its proper divisors (33942930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22541550 is a wasteful number, since it uses less digits than its factorization.

22541550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577 (or 1572 counting only the distinct ones).

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

The square root of 22541550 is about 4747.7942246900. The cubic root of 22541550 is about 282.4844797906.

The spelling of 22541550 in words is "twenty-two million, five hundred forty-one thousand, five hundred fifty".