5129891 has 8 divisors (see below), whose sum is σ = 5580624. Its totient is φ = 4687200.

The previous prime is 5129863. The next prime is 5129893. The reversal of 5129891 is 1989215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5129891 - 2⁶ = 5129827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5129893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641 + ... + 3266.

It is an arithmetic number, because the mean of its divisors is an integer number (697578).

Almost surely, 2^5129891 is an apocalyptic number.

5129891 is a deficient number, since it is larger than the sum of its proper divisors (450733).

5129891 is a wasteful number, since it uses less digits than its factorization.

5129891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

The product of its digits is 6480, while the sum is 35.

The square root of 5129891 is about 2264.9262681156. The cubic root of 5129891 is about 172.4656908591.

The spelling of 5129891 in words is "five million, one hundred twenty-nine thousand, eight hundred ninety-one".