22215045 has 8 divisors (see below), whose sum is σ = 35544096. Its totient is φ = 11848016.

The previous prime is 22215013. The next prime is 22215049. The reversal of 22215045 is 54051222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22215045 - 2⁵ = 22215013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215049) 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 7 ways as a sum of consecutive naturals, for example, 740487 + ... + 740516.

It is an arithmetic number, because the mean of its divisors is an integer number (4443012).

Almost surely, 2^22215045 is an apocalyptic number.

It is an amenable number.

22215045 is a deficient number, since it is larger than the sum of its proper divisors (13329051).

22215045 is a wasteful number, since it uses less digits than its factorization.

22215045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481011.

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

The square root of 22215045 is about 4713.2838870579. The cubic root of 22215045 is about 281.1139509898.

Adding to 22215045 its reverse (54051222), we get a palindrome (76266267).

The spelling of 22215045 in words is "twenty-two million, two hundred fifteen thousand, forty-five".