52081777505 has 8 divisors (see below), whose sum is σ = 62514512424. Its totient is φ = 41654502400.

The previous prime is 52081777499. The next prime is 52081777513. The reversal of 52081777505 is 50577718025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28294267681 + 23787509824 = 168209^2 + 154232^2 .

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

It is not a de Polignac number, because 52081777505 - 2²⁰ = 52080728929 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 52081777505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343936 + ... + 1382145.

It is an arithmetic number, because the mean of its divisors is an integer number (7814314053).

Almost surely, 2^52081777505 is an apocalyptic number.

It is an amenable number.

52081777505 is a deficient number, since it is larger than the sum of its proper divisors (10432734919).

52081777505 is a wasteful number, since it uses less digits than its factorization.

52081777505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729907.

The product of its (nonzero) digits is 686000, while the sum is 47.

The spelling of 52081777505 in words is "fifty-two billion, eighty-one million, seven hundred seventy-seven thousand, five hundred five".