22153513 has 4 divisors (see below), whose sum is σ = 22172500. Its totient is φ = 22134528.

The previous prime is 22153507. The next prime is 22153519. The reversal of 22153513 is 31535122.

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

It is an interprime number because it is at equal distance from previous prime (22153507) and next prime (22153519).

It can be written as a sum of positive squares in 2 ways, for example, as 14684224 + 7469289 = 3832^2 + 2733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22153513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22153519) 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, 7620 + ... + 10117.

It is an arithmetic number, because the mean of its divisors is an integer number (5543125).

Almost surely, 2^22153513 is an apocalyptic number.

It is an amenable number.

22153513 is a deficient number, since it is larger than the sum of its proper divisors (18987).

22153513 is a wasteful number, since it uses less digits than its factorization.

22153513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18986.

The product of its digits is 900, while the sum is 22.

The square root of 22153513 is about 4706.7518523925. The cubic root of 22153513 is about 280.8541646054.

Adding to 22153513 its reverse (31535122), we get a palindrome (53688635).

The spelling of 22153513 in words is "twenty-two million, one hundred fifty-three thousand, five hundred thirteen".