52399145727252 has 72 divisors (see below), whose sum is σ = 133392970692072. Its totient is φ = 17342783078400.

The previous prime is 52399145727251. The next prime is 52399145727259. The reversal of 52399145727252 is 25272754199325.

52399145727252 is a `hidden beast` number, since 5 + 2 + 3 + 9 + 9 + 1 + 4 + 572 + 7 + 2 + 52 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10710997290756 + 41688148436496 = 3272766^2 + 6456636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52399145727252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52399145727251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2095953 + ... + 10449464.

It is an arithmetic number, because the mean of its divisors is an integer number (1852680148501).

Almost surely, 2^{52399145727252} is an apocalyptic number.

It is an amenable number.

52399145727252 is an abundant number, since it is smaller than the sum of its proper divisors (80993824964820).

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

52399145727252 is a wasteful number, since it uses less digits than its factorization.

52399145727252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12546249 (or 12546244 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 63.

The spelling of 52399145727252 in words is "fifty-two trillion, three hundred ninety-nine billion, one hundred forty-five million, seven hundred twenty-seven thousand, two hundred fifty-two".