22535681 has 8 divisors (see below), whose sum is σ = 25855104. Its totient is φ = 19241280.

The previous prime is 22535647. The next prime is 22535717. The reversal of 22535681 is 18653522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22535681 - 2¹⁰ = 22534657 is a prime.

It is a super-2 number, since 2×22535681² = 1015713836267522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22535621) 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 7 ways as a sum of consecutive naturals, for example, 4280 + ... + 7961.

It is an arithmetic number, because the mean of its divisors is an integer number (3231888).

Almost surely, 2^22535681 is an apocalyptic number.

It is an amenable number.

22535681 is a deficient number, since it is larger than the sum of its proper divisors (3319423).

22535681 is a wasteful number, since it uses less digits than its factorization.

22535681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12511.

The product of its digits is 14400, while the sum is 32.

The square root of 22535681 is about 4747.1761079614. The cubic root of 22535681 is about 282.4599614335.

The spelling of 22535681 in words is "twenty-two million, five hundred thirty-five thousand, six hundred eighty-one".