52420442550 has 144 divisors (see below), whose sum is σ = 152384836032. Its totient is φ = 11890132800.

The previous prime is 52420442467. The next prime is 52420442561. The reversal of 52420442550 is 5524402425.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 935629 + ... + 990071.

It is an arithmetic number, because the mean of its divisors is an integer number (1058228028).

Almost surely, 2^52420442550 is an apocalyptic number.

52420442550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 52420442550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76192418016).

52420442550 is an abundant number, since it is smaller than the sum of its proper divisors (99964393482).

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

52420442550 is a wasteful number, since it uses less digits than its factorization.

52420442550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54603 (or 54591 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

Adding to 52420442550 its reverse (5524402425), we get a palindrome (57944844975).

The spelling of 52420442550 in words is "fifty-two billion, four hundred twenty million, four hundred forty-two thousand, five hundred fifty".