22551146 has 8 divisors (see below), whose sum is σ = 35816580. Its totient is φ = 10612288.

The previous prime is 22551131. The next prime is 22551149. The reversal of 22551146 is 64115522.

It can be written as a sum of positive squares in 2 ways, for example, as 22458121 + 93025 = 4739^2 + 305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22551149) 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 3 ways as a sum of consecutive naturals, for example, 331601 + ... + 331668.

Almost surely, 2^22551146 is an apocalyptic number.

22551146 is a deficient number, since it is larger than the sum of its proper divisors (13265434).

22551146 is a wasteful number, since it uses less digits than its factorization.

22551146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663288.

The product of its digits is 2400, while the sum is 26.

The square root of 22551146 is about 4748.8046917093. The cubic root of 22551146 is about 282.5245589112.

Adding to 22551146 its reverse (64115522), we get a palindrome (86666668).

The spelling of 22551146 in words is "twenty-two million, five hundred fifty-one thousand, one hundred forty-six".