22535437 has 4 divisors (see below), whose sum is σ = 22547260. Its totient is φ = 22523616.

The previous prime is 22535431. The next prime is 22535449. The reversal of 22535437 is 73453522.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73453522 = 2 ⋅36726761.

It can be written as a sum of positive squares in 2 ways, for example, as 10278436 + 12257001 = 3206^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 22535437 - 2¹¹ = 22533389 is a prime.

It is a super-3 number, since 3×22535437³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22535399 and 22535408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22535431) 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, 2328 + ... + 7105.

It is an arithmetic number, because the mean of its divisors is an integer number (5636815).

Almost surely, 2^22535437 is an apocalyptic number.

It is an amenable number.

22535437 is a deficient number, since it is larger than the sum of its proper divisors (11823).

22535437 is an equidigital number, since it uses as much as digits as its factorization.

22535437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822.

The product of its digits is 25200, while the sum is 31.

The square root of 22535437 is about 4747.1504084029. The cubic root of 22535437 is about 282.4589420060.

Adding to 22535437 its reverse (73453522), we get a palindrome (95988959).

The spelling of 22535437 in words is "twenty-two million, five hundred thirty-five thousand, four hundred thirty-seven".