2227391 has 4 divisors (see below), whose sum is σ = 2358432. Its totient is φ = 2096352.

The previous prime is 2227369. The next prime is 2227397. The reversal of 2227391 is 1937222.

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 2227391 - 2⁶ = 2227327 is a prime.

It is a super-2 number, since 2×2227391² = 9922541333762, which contains 22 as substring.

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 2227391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2227397) 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, 65495 + ... + 65528.

It is an arithmetic number, because the mean of its divisors is an integer number (589608).

2^2227391 is an apocalyptic number.

2227391 is a deficient number, since it is larger than the sum of its proper divisors (131041).

2227391 is a wasteful number, since it uses less digits than its factorization.

2227391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131040.

The product of its digits is 1512, while the sum is 26.

The square root of 2227391 is about 1492.4446388392. Note that the first 3 decimals coincide. The cubic root of 2227391 is about 130.5966851015.

The spelling of 2227391 in words is "two million, two hundred twenty-seven thousand, three hundred ninety-one".