2145365 has 8 divisors (see below), whose sum is σ = 2585400. Its totient is φ = 1708992.

The previous prime is 2145361. The next prime is 2145379. The reversal of 2145365 is 5635412.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 2137444 = 89^2 + 1462^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2145365 - 2² = 2145361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611 + ... + 2159.

It is an arithmetic number, because the mean of its divisors is an integer number (323175).

2^2145365 is an apocalyptic number.

It is an amenable number.

2145365 is a deficient number, since it is larger than the sum of its proper divisors (440035).

2145365 is a wasteful number, since it uses less digits than its factorization.

2145365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831.

The product of its digits is 3600, while the sum is 26.

The square root of 2145365 is about 1464.7064552326. The cubic root of 2145365 is about 128.9734737037.

The spelling of 2145365 in words is "two million, one hundred forty-five thousand, three hundred sixty-five".