22251146 has 8 divisors (see below), whose sum is σ = 33397860. Its totient is φ = 11118528.

The previous prime is 22251137. The next prime is 22251161. The reversal of 22251146 is 64115222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19492225 + 2758921 = 4415^2 + 1661^2 .

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

It is a super-2 number, since 2×22251146² = 990226996626632, which contains 22 as substring.

It is an unprimeable number.

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, 2450 + ... + 7106.

Almost surely, 2^22251146 is an apocalyptic number.

22251146 is a deficient number, since it is larger than the sum of its proper divisors (11146714).

22251146 is a wasteful number, since it uses less digits than its factorization.

22251146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048.

The product of its digits is 960, while the sum is 23.

The square root of 22251146 is about 4717.1120402212. The cubic root of 22251146 is about 281.2661451802.

Adding to 22251146 its reverse (64115222), we get a palindrome (86366368).

The spelling of 22251146 in words is "twenty-two million, two hundred fifty-one thousand, one hundred forty-six".