5197391 has 4 divisors (see below), whose sum is σ = 5275032. Its totient is φ = 5119752.

The previous prime is 5197363. The next prime is 5197397. The reversal of 5197391 is 1937915.

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 5197391 - 2⁶ = 5197327 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 (5197397) 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, 38720 + ... + 38853.

It is an arithmetic number, because the mean of its divisors is an integer number (1318758).

Almost surely, 2^5197391 is an apocalyptic number.

5197391 is a deficient number, since it is larger than the sum of its proper divisors (77641).

5197391 is an equidigital number, since it uses as much as digits as its factorization.

5197391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77640.

The product of its digits is 8505, while the sum is 35.

The square root of 5197391 is about 2279.7787173320. The cubic root of 5197391 is about 173.2188416335.

The spelling of 5197391 in words is "five million, one hundred ninety-seven thousand, three hundred ninety-one".