5191287 has 4 divisors (see below), whose sum is σ = 6921720. Its totient is φ = 3460856.

The previous prime is 5191279. The next prime is 5191289. The reversal of 5191287 is 7821915.

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 5191287 - 2³ = 5191279 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5191289) 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, 865212 + ... + 865217.

It is an arithmetic number, because the mean of its divisors is an integer number (1730430).

Almost surely, 2^5191287 is an apocalyptic number.

5191287 is a deficient number, since it is larger than the sum of its proper divisors (1730433).

5191287 is a wasteful number, since it uses less digits than its factorization.

5191287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730432.

The product of its digits is 5040, while the sum is 33.

The square root of 5191287 is about 2278.4395976194. The cubic root of 5191287 is about 173.1510036227.

The spelling of 5191287 in words is "five million, one hundred ninety-one thousand, two hundred eighty-seven".