5217826087 has 4 divisors (see below), whose sum is σ = 5237223480. Its totient is φ = 5198428696.

The previous prime is 5217826079. The next prime is 5217826093. The reversal of 5217826087 is 7806287125.

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 5217826087 - 2³ = 5217826079 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 (5217826007) 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, 9698293 + ... + 9698830.

It is an arithmetic number, because the mean of its divisors is an integer number (1309305870).

Almost surely, 2^5217826087 is an apocalyptic number.

5217826087 is a deficient number, since it is larger than the sum of its proper divisors (19397393).

5217826087 is a wasteful number, since it uses less digits than its factorization.

5217826087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19397392.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 5217826087 is about 72234.5214353913. The cubic root of 5217826087 is about 1734.4556519687.

The spelling of 5217826087 in words is "five billion, two hundred seventeen million, eight hundred twenty-six thousand, eighty-seven".