2281745 has 4 divisors (see below), whose sum is σ = 2738100. Its totient is φ = 1825392.

The previous prime is 2281739. The next prime is 2281751. The reversal of 2281745 is 5471822.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2281739) and next prime (2281751).

It can be written as a sum of positive squares in 2 ways, for example, as 332929 + 1948816 = 577^2 + 1396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2281745 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²⁰ + 8⁶ + 1 + 7⁷ + 4⁷ + 5² .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228170 + ... + 228179.

It is an arithmetic number, because the mean of its divisors is an integer number (684525).

2^2281745 is an apocalyptic number.

It is an amenable number.

2281745 is a deficient number, since it is larger than the sum of its proper divisors (456355).

2281745 is an equidigital number, since it uses as much as digits as its factorization.

2281745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456354.

The product of its digits is 4480, while the sum is 29.

The square root of 2281745 is about 1510.5446037771. The cubic root of 2281745 is about 131.6504564423.

The spelling of 2281745 in words is "two million, two hundred eighty-one thousand, seven hundred forty-five".