5244387191 has 4 divisors (see below), whose sum is σ = 5279118384. Its totient is φ = 5209656000.

The previous prime is 5244387167. The next prime is 5244387193. The reversal of 5244387191 is 1917834425.

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 5244387191 - 2²² = 5240192887 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 (5244387193) 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, 17365370 + ... + 17365671.

It is an arithmetic number, because the mean of its divisors is an integer number (1319779596).

Almost surely, 2^5244387191 is an apocalyptic number.

5244387191 is a deficient number, since it is larger than the sum of its proper divisors (34731193).

5244387191 is a wasteful number, since it uses less digits than its factorization.

5244387191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34731192.

The product of its digits is 241920, while the sum is 44.

The square root of 5244387191 is about 72418.1413114145. The cubic root of 5244387191 is about 1737.3937278203.

The spelling of 5244387191 in words is "five billion, two hundred forty-four million, three hundred eighty-seven thousand, one hundred ninety-one".