2261356 has 12 divisors (see below), whose sum is σ = 3993192. Its totient is φ = 1120448.

The previous prime is 2261353. The next prime is 2261377. The reversal of 2261356 is 6531622.

It is a super-2 number, since 2×2261356² = 10227461917472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2261356.

It is not an unprimeable number, because it can be changed into a prime (2261353) 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, 2050 + ... + 2953.

It is an arithmetic number, because the mean of its divisors is an integer number (332766).

2^2261356 is an apocalyptic number.

It is an amenable number.

2261356 is a deficient number, since it is larger than the sum of its proper divisors (1731836).

2261356 is a wasteful number, since it uses less digits than its factorization.

2261356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120 (or 5118 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 2261356 is about 1503.7805690991. The cubic root of 2261356 is about 131.2571527470.

Adding to 2261356 its reverse (6531622), we get a palindrome (8792978).

The spelling of 2261356 in words is "two million, two hundred sixty-one thousand, three hundred fifty-six".