5187391 has 12 divisors (see below), whose sum is σ = 5840296. Its totient is φ = 4601520.

The previous prime is 5187383. The next prime is 5187401. The reversal of 5187391 is 1937815.

It is a happy number.

It is not a de Polignac number, because 5187391 - 2³ = 5187383 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4705 + ... + 5701.

Almost surely, 2^5187391 is an apocalyptic number.

5187391 is a deficient number, since it is larger than the sum of its proper divisors (652905).

5187391 is a wasteful number, since it uses less digits than its factorization.

5187391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 1051 counting only the distinct ones).

The product of its digits is 7560, while the sum is 34.

The square root of 5187391 is about 2277.5844660517. The cubic root of 5187391 is about 173.1076768497.

The spelling of 5187391 in words is "five million, one hundred eighty-seven thousand, three hundred ninety-one".