22051245 has 16 divisors (see below), whose sum is σ = 35608320. Its totient is φ = 11651904.

The previous prime is 22051231. The next prime is 22051247. The reversal of 22051245 is 54215022.

It is a happy number.

It is not a de Polignac number, because 22051245 - 2⁵ = 22051213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051247) 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 15 ways as a sum of consecutive naturals, for example, 5109 + ... + 8378.

It is an arithmetic number, because the mean of its divisors is an integer number (2225520).

Almost surely, 2^22051245 is an apocalyptic number.

It is an amenable number.

22051245 is a deficient number, since it is larger than the sum of its proper divisors (13557075).

22051245 is a wasteful number, since it uses less digits than its factorization.

22051245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13604.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22051245 is about 4695.8753177656. The cubic root of 22051245 is about 280.4213257325.

Adding to 22051245 its reverse (54215022), we get a palindrome (76266267).

The spelling of 22051245 in words is "twenty-two million, fifty-one thousand, two hundred forty-five".