2261361 has 16 divisors (see below), whose sum is σ = 3214400. Its totient is φ = 1410048.

The previous prime is 2261353. The next prime is 2261377. The reversal of 2261361 is 1631622.

It is a happy number.

It is not a de Polignac number, because 2261361 - 2³ = 2261353 is a prime.

It is a super-2 number, since 2×2261361² = 10227507144642, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

2261361 is a Rhonda number in base 14.

It is not an unprimeable number, because it can be changed into a prime (2261461) 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, 5325 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (200900).

2^2261361 is an apocalyptic number.

It is an amenable number.

2261361 is a deficient number, since it is larger than the sum of its proper divisors (953039).

2261361 is a wasteful number, since it uses less digits than its factorization.

2261361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528.

The product of its digits is 432, while the sum is 21.

The square root of 2261361 is about 1503.7822315748. The cubic root of 2261361 is about 131.2572494862.

Adding to 2261361 its reverse (1631622), we get a palindrome (3892983).

The spelling of 2261361 in words is "two million, two hundred sixty-one thousand, three hundred sixty-one".