5637971 has 4 divisors (see below), whose sum is σ = 5659200. Its totient is φ = 5616744.

The previous prime is 5637959. The next prime is 5637997. The reversal of 5637971 is 1797365.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5637971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5637271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10211 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (1414800).

Almost surely, 2^5637971 is an apocalyptic number.

5637971 is a deficient number, since it is larger than the sum of its proper divisors (21229).

5637971 is a wasteful number, since it uses less digits than its factorization.

5637971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21228.

The product of its digits is 39690, while the sum is 38.

The square root of 5637971 is about 2374.4411974189. The cubic root of 5637971 is about 177.9812609150.

Subtracting from 5637971 its reverse (1797365), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 5637971 in words is "five million, six hundred thirty-seven thousand, nine hundred seventy-one".