5249991 has 16 divisors (see below), whose sum is σ = 7458048. Its totient is φ = 3273600.

The previous prime is 5249989. The next prime is 5250029. The reversal of 5249991 is 1999425.

5249991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5249991 - 2¹ = 5249989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5249921) 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 15 ways as a sum of consecutive naturals, for example, 15696 + ... + 16026.

It is an arithmetic number, because the mean of its divisors is an integer number (466128).

Almost surely, 2^5249991 is an apocalyptic number.

5249991 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5249991 is a deficient number, since it is larger than the sum of its proper divisors (2208057).

5249991 is a wasteful number, since it uses less digits than its factorization.

5249991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 29160, while the sum is 39.

The square root of 5249991 is about 2291.2858835161. The cubic root of 5249991 is about 173.8012329292.

The spelling of 5249991 in words is "five million, two hundred forty-nine thousand, nine hundred ninety-one".