22135509 has 24 divisors (see below), whose sum is σ = 35828832. Its totient is φ = 13050720.

The previous prime is 22135507. The next prime is 22135517. The reversal of 22135509 is 90553122.

22135509 is a `hidden beast` number, since 22 + 135 + 509 = 666.

It is not a de Polignac number, because 22135509 - 2¹ = 22135507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22135507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 642 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (1492868).

Almost surely, 2^22135509 is an apocalyptic number.

It is an amenable number.

22135509 is a deficient number, since it is larger than the sum of its proper divisors (13693323).

22135509 is a wasteful number, since it uses less digits than its factorization.

22135509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097 (or 6094 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 22135509 is about 4704.8388920345. The cubic root of 22135509 is about 280.7780612684.

It can be divided in two parts, 22 and 135509, that added together give a palindrome (135531).

The spelling of 22135509 in words is "twenty-two million, one hundred thirty-five thousand, five hundred nine".