22136563 has 4 divisors (see below), whose sum is σ = 22554288. Its totient is φ = 21718840.

The previous prime is 22136551. The next prime is 22136581. The reversal of 22136563 is 36563122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36563122 = 2 ⋅18281561.

It is a cyclic number.

It is not a de Polignac number, because 22136563 - 2⁵ = 22136531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22136503) 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, 208783 + ... + 208888.

It is an arithmetic number, because the mean of its divisors is an integer number (5638572).

Almost surely, 2^22136563 is an apocalyptic number.

22136563 is a deficient number, since it is larger than the sum of its proper divisors (417725).

22136563 is an equidigital number, since it uses as much as digits as its factorization.

22136563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417724.

The product of its digits is 6480, while the sum is 28.

The square root of 22136563 is about 4704.9509030382. The cubic root of 22136563 is about 280.7825176885.

Adding to 22136563 its reverse (36563122), we get a palindrome (58699685).

The spelling of 22136563 in words is "twenty-two million, one hundred thirty-six thousand, five hundred sixty-three".