22546 has 4 divisors (see below), whose sum is σ = 33822. Its totient is φ = 11272.

The previous prime is 22543. The next prime is 22549. The reversal of 22546 is 64522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64522 = 2 ⋅32261.

It is an interprime number because it is at equal distance from previous prime (22543) and next prime (22549).

It can be written as a sum of positive squares in only one way, i.e., 21025 + 1521 = 145^2 + 39^2 .

It is not an unprimeable number, because it can be changed into a prime (22541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5635 + ... + 5638.

2²²⁵⁴⁶ is an apocalyptic number.

22546 is a deficient number, since it is larger than the sum of its proper divisors (11276).

22546 is a wasteful number, since it uses less digits than its factorization.

22546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11275.

The product of its digits is 480, while the sum is 19.

The square root of 22546 is about 150.1532550430. The cubic root of 22546 is about 28.2503067291.

The spelling of 22546 in words is "twenty-two thousand, five hundred forty-six".