22050551 has 4 divisors (see below), whose sum is σ = 22298400. Its totient is φ = 21802704.

The previous prime is 22050533. The next prime is 22050563. The reversal of 22050551 is 15505022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22050551 - 2⁶ = 22050487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123791 + ... + 123968.

It is an arithmetic number, because the mean of its divisors is an integer number (5574600).

Almost surely, 2^22050551 is an apocalyptic number.

22050551 is a deficient number, since it is larger than the sum of its proper divisors (247849).

22050551 is an equidigital number, since it uses as much as digits as its factorization.

22050551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247848.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 22050551 is about 4695.8014225476. The cubic root of 22050551 is about 280.4183838814.

Adding to 22050551 its reverse (15505022), we get a palindrome (37555573).

The spelling of 22050551 in words is "twenty-two million, fifty thousand, five hundred fifty-one".