5645321 has 8 divisors (see below), whose sum is σ = 6177504. Its totient is φ = 5116320.

The previous prime is 5645293. The next prime is 5645323. The reversal of 5645321 is 1235465.

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

It is not a de Polignac number, because 5645321 - 2⁶ = 5645257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645323) 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, 4466 + ... + 5588.

It is an arithmetic number, because the mean of its divisors is an integer number (772188).

Almost surely, 2^5645321 is an apocalyptic number.

It is an amenable number.

5645321 is a deficient number, since it is larger than the sum of its proper divisors (532183).

5645321 is a wasteful number, since it uses less digits than its factorization.

5645321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

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

The square root of 5645321 is about 2375.9884258977. The cubic root of 5645321 is about 178.0585697088.

It can be divided in two parts, 564 and 5321, that added together give a palindrome (5885).

The spelling of 5645321 in words is "five million, six hundred forty-five thousand, three hundred twenty-one".