5217677991 has 8 divisors (see below), whose sum is σ = 7729893360. Its totient is φ = 3478451976.

The previous prime is 5217677963. The next prime is 5217678019. The reversal of 5217677991 is 1997767125.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5217677963) and next prime (5217678019).

It is not a de Polignac number, because 5217677991 - 2¹⁰ = 5217676967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5217672991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96623640 + ... + 96623693.

It is an arithmetic number, because the mean of its divisors is an integer number (966236670).

Almost surely, 2^5217677991 is an apocalyptic number.

5217677991 is a deficient number, since it is larger than the sum of its proper divisors (2512215369).

5217677991 is a wasteful number, since it uses less digits than its factorization.

5217677991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193247342 (or 193247336 counting only the distinct ones).

The product of its digits is 1666980, while the sum is 54.

The square root of 5217677991 is about 72233.4963226895. The cubic root of 5217677991 is about 1734.4392423012.

The spelling of 5217677991 in words is "five billion, two hundred seventeen million, six hundred seventy-seven thousand, nine hundred ninety-one".