5645237 has 4 divisors (see below), whose sum is σ = 6079500. Its totient is φ = 5210976.

The previous prime is 5645203. The next prime is 5645239. The reversal of 5645237 is 7325465.

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 2579236 + 3066001 = 1606^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645237 - 2⁸ = 5644981 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 (5645239) 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, 217112 + ... + 217137.

It is an arithmetic number, because the mean of its divisors is an integer number (1519875).

Almost surely, 2^5645237 is an apocalyptic number.

It is an amenable number.

5645237 is a deficient number, since it is larger than the sum of its proper divisors (434263).

5645237 is a wasteful number, since it uses less digits than its factorization.

5645237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434262.

The product of its digits is 25200, while the sum is 32.

The square root of 5645237 is about 2375.9707489782. The cubic root of 5645237 is about 178.0576865589.

The spelling of 5645237 in words is "five million, six hundred forty-five thousand, two hundred thirty-seven".