2272091 has 4 divisors (see below), whose sum is σ = 2292312. Its totient is φ = 2251872.

The previous prime is 2272087. The next prime is 2272103. The reversal of 2272091 is 1902722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1902722 = 2 ⋅951361.

It is a cyclic number.

It is not a de Polignac number, because 2272091 - 2² = 2272087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2272691) 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, 9941 + ... + 10166.

It is an arithmetic number, because the mean of its divisors is an integer number (573078).

2^2272091 is an apocalyptic number.

2272091 is a deficient number, since it is larger than the sum of its proper divisors (20221).

2272091 is a wasteful number, since it uses less digits than its factorization.

2272091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20220.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2272091 is about 1507.3456803268. The cubic root of 2272091 is about 131.4645241568.

The spelling of 2272091 in words is "two million, two hundred seventy-two thousand, ninety-one".