2261997 has 12 divisors (see below), whose sum is σ = 3294720. Its totient is φ = 1495368.

The previous prime is 2261993. The next prime is 2262017. The reversal of 2261997 is 7991622.

2261997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2261997 - 2² = 2261993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154 + ... + 2132.

It is an arithmetic number, because the mean of its divisors is an integer number (274560).

2^2261997 is an apocalyptic number.

It is an amenable number.

2261997 is a deficient number, since it is larger than the sum of its proper divisors (1032723).

2261997 is a wasteful number, since it uses less digits than its factorization.

2261997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112 (or 2109 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 2261997 is about 1503.9936834974. The cubic root of 2261997 is about 131.2695535494.

The spelling of 2261997 in words is "two million, two hundred sixty-one thousand, nine hundred ninety-seven".