2261172 has 12 divisors (see below), whose sum is σ = 5276096. Its totient is φ = 753720.

The previous prime is 2261143. The next prime is 2261173. The reversal of 2261172 is 2711622.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2261172² = 10225797627168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94204 + ... + 94227.

2^2261172 is an apocalyptic number.

It is an amenable number.

2261172 is an abundant number, since it is smaller than the sum of its proper divisors (3014924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2261172 is a wasteful number, since it uses less digits than its factorization.

2261172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188438 (or 188436 counting only the distinct ones).

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

The square root of 2261172 is about 1503.7193887159. The cubic root of 2261172 is about 131.2535926454.

Adding to 2261172 its reverse (2711622), we get a palindrome (4972794).

The spelling of 2261172 in words is "two million, two hundred sixty-one thousand, one hundred seventy-two".