22242537 has 6 divisors (see below), whose sum is σ = 32128122. Its totient is φ = 14828352.

The previous prime is 22242533. The next prime is 22242553. The reversal of 22242537 is 73524222.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 114921 = 4704^2 + 339^2 .

It is not a de Polignac number, because 22242537 - 2² = 22242533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22242537.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22242533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1235688 + ... + 1235705.

It is an arithmetic number, because the mean of its divisors is an integer number (5354687).

Almost surely, 2^22242537 is an apocalyptic number.

It is an amenable number.

22242537 is a deficient number, since it is larger than the sum of its proper divisors (9885585).

22242537 is a wasteful number, since it uses less digits than its factorization.

22242537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471399 (or 2471396 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22242537 is about 4716.1994232645. The cubic root of 22242537 is about 281.2298664106.

Adding to 22242537 its reverse (73524222), we get a palindrome (95766759).

It can be divided in two parts, 2224 and 2537, that added together give a square (4761 = 69²).

The spelling of 22242537 in words is "twenty-two million, two hundred forty-two thousand, five hundred thirty-seven".