22135501 has 4 divisors (see below), whose sum is σ = 22297212. Its totient is φ = 21973792.

The previous prime is 22135493. The next prime is 22135507. The reversal of 22135501 is 10553122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13875625 + 8259876 = 3725^2 + 2874^2 .

It is a cyclic number.

It is not a de Polignac number, because 22135501 - 2³ = 22135493 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 80650 + ... + 80923.

It is an arithmetic number, because the mean of its divisors is an integer number (5574303).

Almost surely, 2^22135501 is an apocalyptic number.

It is an amenable number.

22135501 is a deficient number, since it is larger than the sum of its proper divisors (161711).

22135501 is a wasteful number, since it uses less digits than its factorization.

22135501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161710.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 22135501 is about 4704.8380418459. The cubic root of 22135501 is about 280.7780274431.

Adding to 22135501 its reverse (10553122), we get a palindrome (32688623).

The spelling of 22135501 in words is "twenty-two million, one hundred thirty-five thousand, five hundred one".