522872861 has 4 divisors (see below), whose sum is σ = 597568992. Its totient is φ = 448176732.

The previous prime is 522872849. The next prime is 522872873. The reversal of 522872861 is 168278225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (522872849) and next prime (522872873).

It is a cyclic number.

It is not a de Polignac number, because 522872861 - 2¹⁸ = 522610717 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 (522872821) 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, 37348055 + ... + 37348068.

It is an arithmetic number, because the mean of its divisors is an integer number (149392248).

Almost surely, 2^522872861 is an apocalyptic number.

It is an amenable number.

522872861 is a deficient number, since it is larger than the sum of its proper divisors (74696131).

522872861 is an equidigital number, since it uses as much as digits as its factorization.

522872861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74696130.

The product of its digits is 107520, while the sum is 41.

The square root of 522872861 is about 22866.4133829510. The cubic root of 522872861 is about 805.6233285431.

The spelling of 522872861 in words is "five hundred twenty-two million, eight hundred seventy-two thousand, eight hundred sixty-one".