2045345 has 4 divisors (see below), whose sum is σ = 2454420. Its totient is φ = 1636272.

The previous prime is 2045339. The next prime is 2045347. The reversal of 2045345 is 5435402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1515361 + 529984 = 1231^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045345 - 2⁸ = 2045089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2045345.

It is not an unprimeable number, because it can be changed into a prime (2045347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204530 + ... + 204539.

It is an arithmetic number, because the mean of its divisors is an integer number (613605).

2^2045345 is an apocalyptic number.

It is an amenable number.

2045345 is a deficient number, since it is larger than the sum of its proper divisors (409075).

2045345 is an equidigital number, since it uses as much as digits as its factorization.

2045345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409074.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 2045345 is about 1430.1555859416. The cubic root of 2045345 is about 126.9371834760.

The spelling of 2045345 in words is "two million, forty-five thousand, three hundred forty-five".