52213145225440 has 48 divisors (see below), whose sum is σ = 125978099349312. Its totient is φ = 20440890893824.

The previous prime is 52213145225369. The next prime is 52213145225441. The reversal of 52213145225440 is 4452254131225.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 52213145225393 and 52213145225402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52213145225441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3471611179 + ... + 3471626218.

It is an arithmetic number, because the mean of its divisors is an integer number (2624543736444).

Almost surely, 2^{52213145225440} is an apocalyptic number.

It is an amenable number.

52213145225440 is an abundant number, since it is smaller than the sum of its proper divisors (73764954123872).

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

52213145225440 is a wasteful number, since it uses less digits than its factorization.

52213145225440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6943237459 (or 6943237451 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 52213145225440 its reverse (4452254131225), we get a palindrome (56665399356665).

The spelling of 52213145225440 in words is "fifty-two trillion, two hundred thirteen billion, one hundred forty-five million, two hundred twenty-five thousand, four hundred forty".