22551434 has 4 divisors (see below), whose sum is σ = 33827154. Its totient is φ = 11275716.

The previous prime is 22551413. The next prime is 22551437. The reversal of 22551434 is 43415522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43415522 = 2 ⋅21707761.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 4190209 = 4285^2 + 2047^2 .

It is not an unprimeable number, because it can be changed into a prime (22551437) 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 as a sum of consecutive naturals, namely, 5637857 + ... + 5637860.

Almost surely, 2^22551434 is an apocalyptic number.

22551434 is a deficient number, since it is larger than the sum of its proper divisors (11275720).

22551434 is a wasteful number, since it uses less digits than its factorization.

22551434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11275719.

The product of its digits is 4800, while the sum is 26.

The square root of 22551434 is about 4748.8350150326. The cubic root of 22551434 is about 282.5257616103.

Adding to 22551434 its reverse (43415522), we get a palindrome (65966956).

The spelling of 22551434 in words is "twenty-two million, five hundred fifty-one thousand, four hundred thirty-four".