22441551 has 16 divisors (see below), whose sum is σ = 33696768. Its totient is φ = 13161600.

The previous prime is 22441543. The next prime is 22441567. The reversal of 22441551 is 15514422.

It is not a de Polignac number, because 22441551 - 2³ = 22441543 is a prime.

It is a super-2 number, since 2×22441551² = 1007246422571202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22441501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9946 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (2106048).

Almost surely, 2^22441551 is an apocalyptic number.

22441551 is a deficient number, since it is larger than the sum of its proper divisors (11255217).

22441551 is a wasteful number, since it uses less digits than its factorization.

22441551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21982.

The product of its digits is 1600, while the sum is 24.

The square root of 22441551 is about 4737.2514182804. The cubic root of 22441551 is about 282.0661406151.

Adding to 22441551 its reverse (15514422), we get a palindrome (37955973).

The spelling of 22441551 in words is "twenty-two million, four hundred forty-one thousand, five hundred fifty-one".