2272261 has 8 divisors (see below), whose sum is σ = 2349144. Its totient is φ = 2196480.

The previous prime is 2272253. The next prime is 2272273. The reversal of 2272261 is 1622722.

It can be written as a sum of positive squares in 4 ways, for example, as 4225 + 2268036 = 65^2 + 1506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2272261 - 2³ = 2272253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6261 + ... + 6613.

It is an arithmetic number, because the mean of its divisors is an integer number (293643).

2^2272261 is an apocalyptic number.

It is an amenable number.

2272261 is a deficient number, since it is larger than the sum of its proper divisors (76883).

2272261 is a wasteful number, since it uses less digits than its factorization.

2272261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

The product of its digits is 672, while the sum is 22.

The square root of 2272261 is about 1507.4020697876. The cubic root of 2272261 is about 131.4678028418.

Adding to 2272261 its reverse (1622722), we get a palindrome (3894983).

The spelling of 2272261 in words is "two million, two hundred seventy-two thousand, two hundred sixty-one".