2261445 has 16 divisors (see below), whose sum is σ = 3654720. Its totient is φ = 1193984.

The previous prime is 2261407. The next prime is 2261447. The reversal of 2261445 is 5441622.

It is a cyclic number.

It is not a de Polignac number, because 2261445 - 2¹⁰ = 2260421 is a prime.

It is a super-2 number, since 2×2261445² = 10228266976050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261447) 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, 901 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (228420).

2^2261445 is an apocalyptic number.

It is an amenable number.

2261445 is a deficient number, since it is larger than the sum of its proper divisors (1393275).

2261445 is a wasteful number, since it uses less digits than its factorization.

2261445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its digits is 1920, while the sum is 24.

The square root of 2261445 is about 1503.8101608913. The cubic root of 2261445 is about 131.2588746834.

The spelling of 2261445 in words is "two million, two hundred sixty-one thousand, four hundred forty-five".