2281365 has 40 divisors (see below), whose sum is σ = 4216608. Its totient is φ = 1179360.

The previous prime is 2281361. The next prime is 2281373. The reversal of 2281365 is 5631822.

It is not a de Polignac number, because 2281365 - 2² = 2281361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁴ + 8² + 1 + 3¹³ + 6⁷ + 5⁸ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281361) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17350 + ... + 17480.

2^2281365 is an apocalyptic number.

It is an amenable number.

2281365 is a deficient number, since it is larger than the sum of its proper divisors (1935243).

2281365 is a wasteful number, since it uses less digits than its factorization.

2281365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 182 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2281365 is about 1510.4188160904. The cubic root of 2281365 is about 131.6431477157.

The spelling of 2281365 in words is "two million, two hundred eighty-one thousand, three hundred sixty-five".