5137891 has 4 divisors (see below), whose sum is σ = 5604984. Its totient is φ = 4670800.

The previous prime is 5137871. The next prime is 5137903. The reversal of 5137891 is 1987315.

It is a happy number.

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 5137891 - 2¹⁵ = 5105123 is a prime.

It is a super-3 number, since 3×5137891³ (a number of 21 digits) contains 333 as substring.

5137891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5137801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233530 + ... + 233551.

It is an arithmetic number, because the mean of its divisors is an integer number (1401246).

Almost surely, 2^5137891 is an apocalyptic number.

5137891 is a deficient number, since it is larger than the sum of its proper divisors (467093).

5137891 is a wasteful number, since it uses less digits than its factorization.

5137891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467092.

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

The square root of 5137891 is about 2266.6916420193. The cubic root of 5137891 is about 172.5552969818. Note that the first 3 decimals are identical.

The spelling of 5137891 in words is "five million, one hundred thirty-seven thousand, eight hundred ninety-one".