52115891845 has 4 divisors (see below), whose sum is σ = 62539070220. Its totient is φ = 41692713472.

The previous prime is 52115891827. The next prime is 52115891921. The reversal of 52115891845 is 54819851125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8991970276 + 43123921569 = 94826^2 + 207663^2 .

It is a cyclic number.

It is not a de Polignac number, because 52115891845 - 2²⁷ = 51981674117 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5211589180 + ... + 5211589189.

It is an arithmetic number, because the mean of its divisors is an integer number (15634767555).

Almost surely, 2^52115891845 is an apocalyptic number.

It is an amenable number.

52115891845 is a deficient number, since it is larger than the sum of its proper divisors (10423178375).

52115891845 is a wasteful number, since it uses less digits than its factorization.

52115891845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10423178374.

The product of its digits is 576000, while the sum is 49.

The spelling of 52115891845 in words is "fifty-two billion, one hundred fifteen million, eight hundred ninety-one thousand, eight hundred forty-five".