52445981951 has 4 divisors (see below), whose sum is σ = 57213798504. Its totient is φ = 47678165400.

The previous prime is 52445981947. The next prime is 52445981969. The reversal of 52445981951 is 15918954425.

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 52445981951 - 2² = 52445981947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52445981893 and 52445981902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52445981911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2383908260 + ... + 2383908281.

It is an arithmetic number, because the mean of its divisors is an integer number (14303449626).

Almost surely, 2^52445981951 is an apocalyptic number.

52445981951 is a deficient number, since it is larger than the sum of its proper divisors (4767816553).

52445981951 is a wasteful number, since it uses less digits than its factorization.

52445981951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767816552.

The product of its digits is 2592000, while the sum is 53.

The spelling of 52445981951 in words is "fifty-two billion, four hundred forty-five million, nine hundred eighty-one thousand, nine hundred fifty-one".