51171552563 has 8 divisors (see below), whose sum is σ = 52182274032. Its totient is φ = 50170692096.

The previous prime is 51171552547. The next prime is 51171552623. The reversal of 51171552563 is 36525517115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51171552563 - 2⁴ = 51171552547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51171552563.

It is not an unprimeable number, because it can be changed into a prime (51171552503) 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, 2454770 + ... + 2475527.

It is an arithmetic number, because the mean of its divisors is an integer number (6522784254).

Almost surely, 2^51171552563 is an apocalyptic number.

51171552563 is a deficient number, since it is larger than the sum of its proper divisors (1010721469).

51171552563 is a wasteful number, since it uses less digits than its factorization.

51171552563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930501.

The product of its digits is 157500, while the sum is 41.

The spelling of 51171552563 in words is "fifty-one billion, one hundred seventy-one million, five hundred fifty-two thousand, five hundred sixty-three".