5156791 has 4 divisors (see below), whose sum is σ = 5166000. Its totient is φ = 5147584.

The previous prime is 5156783. The next prime is 5156803. The reversal of 5156791 is 1976515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1976515 = 5 ⋅395303.

It is a cyclic number.

It is not a de Polignac number, because 5156791 - 2³ = 5156783 is a prime.

It is a Duffinian number.

5156791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3706 + ... + 4903.

It is an arithmetic number, because the mean of its divisors is an integer number (1291500).

Almost surely, 2^5156791 is an apocalyptic number.

5156791 is a deficient number, since it is larger than the sum of its proper divisors (9209).

5156791 is an equidigital number, since it uses as much as digits as its factorization.

5156791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9208.

The product of its digits is 9450, while the sum is 34.

The square root of 5156791 is about 2270.8568867280. The cubic root of 5156791 is about 172.7666226222.

The spelling of 5156791 in words is "five million, one hundred fifty-six thousand, seven hundred ninety-one".