22051151 has 4 divisors (see below), whose sum is σ = 22064592. Its totient is φ = 22037712.

The previous prime is 22051147. The next prime is 22051171. The reversal of 22051151 is 15115022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22051151 - 2² = 22051147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3851 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (5516148).

Almost surely, 2^22051151 is an apocalyptic number.

22051151 is a deficient number, since it is larger than the sum of its proper divisors (13441).

22051151 is a wasteful number, since it uses less digits than its factorization.

22051151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13440.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 22051151 is about 4695.8653089713. The cubic root of 22051151 is about 280.4209272722.

Adding to 22051151 its reverse (15115022), we get a palindrome (37166173).

The spelling of 22051151 in words is "twenty-two million, fifty-one thousand, one hundred fifty-one".