2261045 has 8 divisors (see below), whose sum is σ = 2744280. Its totient is φ = 1788160.

The previous prime is 2261041. The next prime is 2261053. The reversal of 2261045 is 5401622.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5041 + 2256004 = 71^2 + 1502^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2261045 - 2² = 2261041 is a prime.

It is a super-2 number, since 2×2261045² = 10224648984050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261041) 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 7 ways as a sum of consecutive naturals, for example, 2096 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (343035).

2^2261045 is an apocalyptic number.

It is an amenable number.

2261045 is a deficient number, since it is larger than the sum of its proper divisors (483235).

2261045 is an equidigital number, since it uses as much as digits as its factorization.

2261045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5175.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2261045 is about 1503.6771594993. The cubic root of 2261045 is about 131.2511352887.

Adding to 2261045 its reverse (5401622), we get a palindrome (7662667).

The spelling of 2261045 in words is "two million, two hundred sixty-one thousand, forty-five".