22232545 has 4 divisors (see below), whose sum is σ = 26679060. Its totient is φ = 17786032.

The previous prime is 22232533. The next prime is 22232563. The reversal of 22232545 is 54523222.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3370896 + 18861649 = 1836^2 + 4343^2 .

It is a cyclic number.

It is not a de Polignac number, because 22232545 - 2¹¹ = 22230497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2223250 + ... + 2223259.

It is an arithmetic number, because the mean of its divisors is an integer number (6669765).

Almost surely, 2^22232545 is an apocalyptic number.

It is an amenable number.

22232545 is a deficient number, since it is larger than the sum of its proper divisors (4446515).

22232545 is an equidigital number, since it uses as much as digits as its factorization.

22232545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446514.

The product of its digits is 4800, while the sum is 25.

The square root of 22232545 is about 4715.1399767133. The cubic root of 22232545 is about 281.1877478682.

Adding to 22232545 its reverse (54523222), we get a palindrome (76755767).

The spelling of 22232545 in words is "twenty-two million, two hundred thirty-two thousand, five hundred forty-five".