22088537 has 4 divisors (see below), whose sum is σ = 22100196. Its totient is φ = 22076880.

The previous prime is 22088531. The next prime is 22088551. The reversal of 22088537 is 73588022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6635776 + 15452761 = 2576^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 22088537 - 2⁸ = 22088281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22088497 and 22088506.

It is not an unprimeable number, because it can be changed into a prime (22088531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258 + ... + 7019.

It is an arithmetic number, because the mean of its divisors is an integer number (5525049).

Almost surely, 2^22088537 is an apocalyptic number.

It is an amenable number.

22088537 is a deficient number, since it is larger than the sum of its proper divisors (11659).

22088537 is an equidigital number, since it uses as much as digits as its factorization.

22088537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11658.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 22088537 is about 4699.8443591251. The cubic root of 22088537 is about 280.5793150366.

The spelling of 22088537 in words is "twenty-two million, eighty-eight thousand, five hundred thirty-seven".