5217791 has 4 divisors (see below), whose sum is σ = 5229432. Its totient is φ = 5206152.

The previous prime is 5217787. The next prime is 5217809. The reversal of 5217791 is 1977125.

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 5217791 - 2² = 5217787 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 (5217731) 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, 5120 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (1307358).

Almost surely, 2^5217791 is an apocalyptic number.

5217791 is a deficient number, since it is larger than the sum of its proper divisors (11641).

5217791 is a wasteful number, since it uses less digits than its factorization.

5217791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640.

The product of its digits is 4410, while the sum is 32.

The square root of 5217791 is about 2284.2484540873. The cubic root of 5217791 is about 173.4451764208.

The spelling of 5217791 in words is "five million, two hundred seventeen thousand, seven hundred ninety-one".