22515126 has 16 divisors (see below), whose sum is σ = 45078528. Its totient is φ = 7497000.

The previous prime is 22515121. The next prime is 22515127. The reversal of 22515126 is 62151522.

It is a happy number.

It is a super-5 number, since 5×22515126⁵ (a number of 38 digits) contains 55555 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22515096 and 22515105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22515121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7551 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (2817408).

Almost surely, 2^22515126 is an apocalyptic number.

22515126 is an abundant number, since it is smaller than the sum of its proper divisors (22563402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22515126 is a wasteful number, since it uses less digits than its factorization.

22515126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027.

The product of its digits is 1200, while the sum is 24.

The square root of 22515126 is about 4745.0106427699. The cubic root of 22515126 is about 282.3740572086.

Adding to 22515126 its reverse (62151522), we get a palindrome (84666648).

It can be divided in two parts, 225 and 15126, that added together give a palindrome (15351).

The spelling of 22515126 in words is "twenty-two million, five hundred fifteen thousand, one hundred twenty-six".