52021170432 has 720 divisors, whose sum is σ = 199821963264. Its totient is φ = 13063680000.

The previous prime is 52021170431. The next prime is 52021170469. The reversal of 52021170432 is 23407112025.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 52021170396 and 52021170405.

It is not an unprimeable number, because it can be changed into a prime (52021170431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 49496307 + ... + 49497357.

Almost surely, 2^52021170432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52021170432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99910981632).

52021170432 is an abundant number, since it is smaller than the sum of its proper divisors (147800792832).

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

52021170432 is a wasteful number, since it uses less digits than its factorization.

52021170432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 52021170432 its reverse (23407112025), we get a palindrome (75428282457).

The spelling of 52021170432 in words is "fifty-two billion, twenty-one million, one hundred seventy thousand, four hundred thirty-two".