5911391 has 4 divisors (see below), whose sum is σ = 6168432. Its totient is φ = 5654352.

The previous prime is 5911361. The next prime is 5911417. The reversal of 5911391 is 1931195.

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-5911391 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 (5911351) 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, 128486 + ... + 128531.

It is an arithmetic number, because the mean of its divisors is an integer number (1542108).

Almost surely, 2^5911391 is an apocalyptic number.

5911391 is a deficient number, since it is larger than the sum of its proper divisors (257041).

5911391 is a wasteful number, since it uses less digits than its factorization.

5911391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257040.

The product of its digits is 1215, while the sum is 29.

The square root of 5911391 is about 2431.3352298686. The cubic root of 5911391 is about 180.8131013394.

The spelling of 5911391 in words is "five million, nine hundred eleven thousand, three hundred ninety-one".