22551473 has 8 divisors (see below), whose sum is σ = 26662080. Its totient is φ = 18663120.

The previous prime is 22551467. The next prime is 22551491. The reversal of 22551473 is 37415522.

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 22551473 - 2⁴ = 22551457 is a prime.

It is a super-4 number, since 4×22551473⁴ (a number of 31 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22551413) 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, 55343 + ... + 55748.

It is an arithmetic number, because the mean of its divisors is an integer number (3332760).

Almost surely, 2^22551473 is an apocalyptic number.

It is an amenable number.

22551473 is a deficient number, since it is larger than the sum of its proper divisors (4110607).

22551473 is a wasteful number, since it uses less digits than its factorization.

22551473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111127.

The product of its digits is 8400, while the sum is 29.

The square root of 22551473 is about 4748.8391213011. The cubic root of 22551473 is about 282.5259244750.

Adding to 22551473 its reverse (37415522), we get a palindrome (59966995).

The spelling of 22551473 in words is "twenty-two million, five hundred fifty-one thousand, four hundred seventy-three".