22536506 has 4 divisors (see below), whose sum is σ = 33804762. Its totient is φ = 11268252.

The previous prime is 22536497. The next prime is 22536517. The reversal of 22536506 is 60563522.

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 only one way, i.e., 22420225 + 116281 = 4735^2 + 341^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5634125 + ... + 5634128.

Almost surely, 2^22536506 is an apocalyptic number.

22536506 is a deficient number, since it is larger than the sum of its proper divisors (11268256).

22536506 is a wasteful number, since it uses less digits than its factorization.

22536506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11268255.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 22536506 is about 4747.2630009301. The cubic root of 22536506 is about 282.4634082138.

The spelling of 22536506 in words is "twenty-two million, five hundred thirty-six thousand, five hundred six".