52511497856 has 64 divisors (see below), whose sum is σ = 105830450880. Its totient is φ = 25950855168.

The previous prime is 52511497853. The next prime is 52511497933. The reversal of 52511497856 is 65879411525.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 52511497798 and 52511497807.

It is not an unprimeable number, because it can be changed into a prime (52511497853) 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 7 ways as a sum of consecutive naturals, for example, 11258981 + ... + 11263643.

It is an arithmetic number, because the mean of its divisors is an integer number (1653600795).

Almost surely, 2^52511497856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52511497856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52915225440).

52511497856 is an abundant number, since it is smaller than the sum of its proper divisors (53318953024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52511497856 is an equidigital number, since it uses as much as digits as its factorization.

52511497856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681 (or 5669 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 53.

The spelling of 52511497856 in words is "fifty-two billion, five hundred eleven million, four hundred ninety-seven thousand, eight hundred fifty-six".