22085577 has 12 divisors (see below), whose sum is σ = 32504004. Its totient is φ = 14445600.

The previous prime is 22085573. The next prime is 22085579. The reversal of 22085577 is 77558022.

22085577 is a `hidden beast` number, since 2 + 2 + 0 + 85 + 577 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11451456 + 10634121 = 3384^2 + 3261^2 .

It is not a de Polignac number, because 22085577 - 2² = 22085573 is a prime.

It is a super-2 number, since 2×22085577² = 975545422845858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22085573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22674 + ... + 23627.

It is an arithmetic number, because the mean of its divisors is an integer number (2708667).

Almost surely, 2^22085577 is an apocalyptic number.

It is an amenable number.

22085577 is a deficient number, since it is larger than the sum of its proper divisors (10418427).

22085577 is a wasteful number, since it uses less digits than its factorization.

22085577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46360 (or 46357 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 22085577 is about 4699.5294445295. The cubic root of 22085577 is about 280.5667813580.

The spelling of 22085577 in words is "twenty-two million, eighty-five thousand, five hundred seventy-seven".