52561464550 has 36 divisors (see below), whose sum is σ = 113725851660. Its totient is φ = 18021072720.

The previous prime is 52561464481. The next prime is 52561464577. The reversal of 52561464550 is 5546416525.

52561464550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 52561464497 and 52561464506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10724380 + ... + 10729279.

It is an arithmetic number, because the mean of its divisors is an integer number (3159051435).

Almost surely, 2^52561464550 is an apocalyptic number.

52561464550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52561464550 is an abundant number, since it is smaller than the sum of its proper divisors (61164387110).

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

52561464550 is a wasteful number, since it uses less digits than its factorization.

52561464550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21453685 (or 21453673 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 52561464550 in words is "fifty-two billion, five hundred sixty-one million, four hundred sixty-four thousand, five hundred fifty".