2271261 has 8 divisors (see below), whose sum is σ = 3036960. Its totient is φ = 1509872.

The previous prime is 2271257. The next prime is 2271263. The reversal of 2271261 is 1621722.

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 2271261 - 2² = 2271257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271263) 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, 475 + ... + 2183.

It is an arithmetic number, because the mean of its divisors is an integer number (379620).

2^2271261 is an apocalyptic number.

It is an amenable number.

2271261 is a deficient number, since it is larger than the sum of its proper divisors (765699).

2271261 is a wasteful number, since it uses less digits than its factorization.

2271261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155.

The product of its digits is 336, while the sum is 21.

The square root of 2271261 is about 1507.0703367793. The cubic root of 2271261 is about 131.4485141108.

Adding to 2271261 its reverse (1621722), we get a palindrome (3892983).

The spelling of 2271261 in words is "two million, two hundred seventy-one thousand, two hundred sixty-one".