52145231200 has 144 divisors (see below), whose sum is σ = 129026898000. Its totient is φ = 20577024000.

The previous prime is 52145231179. The next prime is 52145231219. The reversal of 52145231200 is 213254125.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 18967426 + ... + 18970174.

It is an arithmetic number, because the mean of its divisors is an integer number (896020125).

Almost surely, 2^52145231200 is an apocalyptic number.

52145231200 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 52145231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64513449000).

52145231200 is an abundant number, since it is smaller than the sum of its proper divisors (76881666800).

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

52145231200 is a wasteful number, since it uses less digits than its factorization.

52145231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3068 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 52145231200 its reverse (213254125), we get a palindrome (52358485325).

The spelling of 52145231200 in words is "fifty-two billion, one hundred forty-five million, two hundred thirty-one thousand, two hundred".