22053547 has 4 divisors (see below), whose sum is σ = 23214280. Its totient is φ = 20892816.

The previous prime is 22053503. The next prime is 22053557. The reversal of 22053547 is 74535022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74535022 = 2 ⋅37267511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22053547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22053557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580338 + ... + 580375.

It is an arithmetic number, because the mean of its divisors is an integer number (5803570).

Almost surely, 2^22053547 is an apocalyptic number.

22053547 is a deficient number, since it is larger than the sum of its proper divisors (1160733).

22053547 is a wasteful number, since it uses less digits than its factorization.

22053547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160732.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 22053547 is about 4696.1204200915. The cubic root of 22053547 is about 280.4310834194.

Adding to 22053547 its reverse (74535022), we get a palindrome (96588569).

The spelling of 22053547 in words is "twenty-two million, fifty-three thousand, five hundred forty-seven".