5645791 has 4 divisors (see below), whose sum is σ = 5657872. Its totient is φ = 5633712.

The previous prime is 5645779. The next prime is 5645851. The reversal of 5645791 is 1975465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1975465 = 5 ⋅395093.

It is a cyclic number.

It is not a de Polignac number, because 5645791 - 2⁹ = 5645279 is a prime.

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 5645791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645701) 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, 5310 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (1414468).

Almost surely, 2^5645791 is an apocalyptic number.

5645791 is a deficient number, since it is larger than the sum of its proper divisors (12081).

5645791 is a wasteful number, since it uses less digits than its factorization.

5645791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12080.

The product of its digits is 37800, while the sum is 37.

The square root of 5645791 is about 2376.0873300449. The cubic root of 5645791 is about 178.0635109811.

The spelling of 5645791 in words is "five million, six hundred forty-five thousand, seven hundred ninety-one".