22054521 has 8 divisors (see below), whose sum is σ = 29582784. Its totient is φ = 14614640.

The previous prime is 22054481. The next prime is 22054531. The reversal of 22054521 is 12545022.

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 22054521 - 2⁷ = 22054393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22054531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21510 + ... + 22511.

It is an arithmetic number, because the mean of its divisors is an integer number (3697848).

Almost surely, 2^22054521 is an apocalyptic number.

It is an amenable number.

22054521 is a deficient number, since it is larger than the sum of its proper divisors (7528263).

22054521 is a wasteful number, since it uses less digits than its factorization.

22054521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44191.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22054521 is about 4696.2241215683. The cubic root of 22054521 is about 280.4352117932.

Adding to 22054521 its reverse (12545022), we get a palindrome (34599543).

The spelling of 22054521 in words is "twenty-two million, fifty-four thousand, five hundred twenty-one".