22085507 has 4 divisors (see below), whose sum is σ = 22141536. Its totient is φ = 22029480.

The previous prime is 22085489. The next prime is 22085513. The reversal of 22085507 is 70558022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22085507 - 2²⁴ = 5308291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22085507.

It is not an unprimeable number, because it can be changed into a prime (22085527) 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, 27419 + ... + 28212.

It is an arithmetic number, because the mean of its divisors is an integer number (5535384).

Almost surely, 2^22085507 is an apocalyptic number.

22085507 is a deficient number, since it is larger than the sum of its proper divisors (56029).

22085507 is an equidigital number, since it uses as much as digits as its factorization.

22085507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56028.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 22085507 is about 4699.5219969695. The cubic root of 22085507 is about 280.5664849399.

The spelling of 22085507 in words is "twenty-two million, eighty-five thousand, five hundred seven".