2045321 has 8 divisors (see below), whose sum is σ = 2260224. Its totient is φ = 1840960.

The previous prime is 2045317. The next prime is 2045333. The reversal of 2045321 is 1235402.

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 2045321 - 2² = 2045317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2045321.

It is not an unprimeable number, because it can be changed into a prime (2045311) 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, 2225 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (282528).

2^2045321 is an apocalyptic number.

It is an amenable number.

2045321 is a deficient number, since it is larger than the sum of its proper divisors (214903).

2045321 is a wasteful number, since it uses less digits than its factorization.

2045321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2045321 is about 1430.1471952215. The cubic root of 2045321 is about 126.9366869821.

The spelling of 2045321 in words is "two million, forty-five thousand, three hundred twenty-one".