22605081 has 4 divisors (see below), whose sum is σ = 30140112. Its totient is φ = 15070052.

The previous prime is 22605071. The next prime is 22605091. The reversal of 22605081 is 18050622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (22605071) and next prime (22605091).

It is a cyclic number.

It is not a de Polignac number, because 22605081 - 2¹⁵ = 22572313 is a prime.

It is a super-4 number, since 4×22605081⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (22605071) 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 3 ways as a sum of consecutive naturals, for example, 3767511 + ... + 3767516.

It is an arithmetic number, because the mean of its divisors is an integer number (7535028).

Almost surely, 2^22605081 is an apocalyptic number.

It is an amenable number.

22605081 is a deficient number, since it is larger than the sum of its proper divisors (7535031).

22605081 is an equidigital number, since it uses as much as digits as its factorization.

22605081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535030.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 22605081 is about 4754.4800977604. The cubic root of 22605081 is about 282.7496151769.

The spelling of 22605081 in words is "twenty-two million, six hundred five thousand, eighty-one".