5156391 has 16 divisors (see below), whose sum is σ = 7360640. Its totient is φ = 3201120.

The previous prime is 5156383. The next prime is 5156399. The reversal of 5156391 is 1936515.

It is an interprime number because it is at equal distance from previous prime (5156383) and next prime (5156399).

It is not a de Polignac number, because 5156391 - 2³ = 5156383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156399) 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 15 ways as a sum of consecutive naturals, for example, 2736 + ... + 4218.

It is an arithmetic number, because the mean of its divisors is an integer number (460040).

Almost surely, 2^5156391 is an apocalyptic number.

5156391 is a deficient number, since it is larger than the sum of its proper divisors (2204249).

5156391 is a wasteful number, since it uses less digits than its factorization.

5156391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566.

The product of its digits is 4050, while the sum is 30.

The square root of 5156391 is about 2270.7688125390. The cubic root of 5156391 is about 172.7621554748.

The spelling of 5156391 in words is "five million, one hundred fifty-six thousand, three hundred ninety-one".