52200000000 has 540 divisors, whose sum is σ = 194809470570. Its totient is φ = 13440000000.

The previous prime is 52199999993. The next prime is 52200000001. The reversal of 52200000000 is 225.

It can be written as a sum of positive squares in 9 ways, for example, as 50830407936 + 1369592064 = 225456^2 + 37008^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (52200000001) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1799999986 + ... + 1800000014.

Almost surely, 2^52200000000 is an apocalyptic number.

52200000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52200000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97404735285).

52200000000 is an abundant number, since it is smaller than the sum of its proper divisors (142609470570).

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

52200000000 is an frugal number, since it uses more digits than its factorization.

52200000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

Adding to 52200000000 its reverse (225), we get a palindrome (52200000225).

The spelling of 52200000000 in words is "fifty-two billion, two hundred million", and thus it is an aban number.