22274161 has 16 divisors (see below), whose sum is σ = 27612928. Its totient is φ = 17496000.

The previous prime is 22274141. The next prime is 22274167. The reversal of 22274161 is 16147222.

It is a 7-Lehmer number, since φ(22274161) divides (22274161-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 22274161 - 2⁷ = 22274033 is a prime.

It is a super-2 number, since 2×22274161² = 992276496507842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22274167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12931 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (1725808).

Almost surely, 2^22274161 is an apocalyptic number.

It is an amenable number.

22274161 is a deficient number, since it is larger than the sum of its proper divisors (5338767).

22274161 is a wasteful number, since it uses less digits than its factorization.

22274161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its digits is 1344, while the sum is 25.

The square root of 22274161 is about 4719.5509320273. The cubic root of 22274161 is about 281.3630856517.

The spelling of 22274161 in words is "twenty-two million, two hundred seventy-four thousand, one hundred sixty-one".