53085278550 has 48 divisors (see below), whose sum is σ = 131683446720. Its totient is φ = 14152638240.

The previous prime is 53085278549. The next prime is 53085278569. The reversal of 53085278550 is 5587258035.

It is a self number, because there is not a number n which added to its sum of digits gives 53085278550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610069 + ... + 691631.

It is an arithmetic number, because the mean of its divisors is an integer number (2743405140).

Almost surely, 2^53085278550 is an apocalyptic number.

53085278550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53085278550 is an abundant number, since it is smaller than the sum of its proper divisors (78598168170).

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

53085278550 is a wasteful number, since it uses less digits than its factorization.

53085278550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85917 (or 85912 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 48.

The spelling of 53085278550 in words is "fifty-three billion, eighty-five million, two hundred seventy-eight thousand, five hundred fifty".