2261249 has 4 divisors (see below), whose sum is σ = 2273280. Its totient is φ = 2249220.

The previous prime is 2261227. The next prime is 2261267. The reversal of 2261249 is 9421622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2261249 is a prime.

It is a super-2 number, since 2×2261249² = 10226494080002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2261219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5729 + ... + 6110.

It is an arithmetic number, because the mean of its divisors is an integer number (568320).

2^2261249 is an apocalyptic number.

It is an amenable number.

2261249 is a deficient number, since it is larger than the sum of its proper divisors (12031).

2261249 is a wasteful number, since it uses less digits than its factorization.

2261249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12030.

The product of its digits is 1728, while the sum is 26.

The square root of 2261249 is about 1503.7449916791. The cubic root of 2261249 is about 131.2550824940.

The spelling of 2261249 in words is "two million, two hundred sixty-one thousand, two hundred forty-nine".