5637391 has 4 divisors (see below), whose sum is σ = 5733000. Its totient is φ = 5541784.

The previous prime is 5637389. The next prime is 5637407. The reversal of 5637391 is 1937365.

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

It is a cyclic number.

It is not a de Polignac number, because 5637391 - 2¹ = 5637389 is a prime.

It is a Duffinian number.

5637391 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5637301) 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, 47716 + ... + 47833.

It is an arithmetic number, because the mean of its divisors is an integer number (1433250).

Almost surely, 2^5637391 is an apocalyptic number.

5637391 is a deficient number, since it is larger than the sum of its proper divisors (95609).

5637391 is an equidigital number, since it uses as much as digits as its factorization.

5637391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95608.

The product of its digits is 17010, while the sum is 34.

The square root of 5637391 is about 2374.3190602781. The cubic root of 5637391 is about 177.9751574976.

The spelling of 5637391 in words is "five million, six hundred thirty-seven thousand, three hundred ninety-one".