22512145 has 8 divisors (see below), whose sum is σ = 27040320. Its totient is φ = 17992560.

The previous prime is 22512143. The next prime is 22512151. The reversal of 22512145 is 54121522.

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

It is not a de Polignac number, because 22512145 - 2¹ = 22512143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22512143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7926 + ... + 10384.

It is an arithmetic number, because the mean of its divisors is an integer number (3380040).

Almost surely, 2^22512145 is an apocalyptic number.

It is an amenable number.

22512145 is a deficient number, since it is larger than the sum of its proper divisors (4528175).

22512145 is a wasteful number, since it uses less digits than its factorization.

22512145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295.

The product of its digits is 800, while the sum is 22.

The square root of 22512145 is about 4744.6965129500. The cubic root of 22512145 is about 282.3615945614.

Adding to 22512145 its reverse (54121522), we get a palindrome (76633667).

The spelling of 22512145 in words is "twenty-two million, five hundred twelve thousand, one hundred forty-five".