2271405 has 16 divisors (see below), whose sum is σ = 3660480. Its totient is φ = 1202688.

The previous prime is 2271403. The next prime is 2271407. The reversal of 2271405 is 5041722.

It is an interprime number because it is at equal distance from previous prime (2271403) and next prime (2271407).

It is not a de Polignac number, because 2271405 - 2¹ = 2271403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271403) 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, 1981 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (228780).

2^2271405 is an apocalyptic number.

It is an amenable number.

2271405 is a deficient number, since it is larger than the sum of its proper divisors (1389075).

2271405 is a wasteful number, since it uses less digits than its factorization.

2271405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2271405 is about 1507.1181108327. The cubic root of 2271405 is about 131.4512920370.

The spelling of 2271405 in words is "two million, two hundred seventy-one thousand, four hundred five".