52021332 has 48 divisors (see below), whose sum is σ = 147134400. Its totient is φ = 15763680.

The previous prime is 52021313. The next prime is 52021369. The reversal of 52021332 is 23312025.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20707 + ... + 23082.

It is an arithmetic number, because the mean of its divisors is an integer number (3065300).

Almost surely, 2^52021332 is an apocalyptic number.

It is an amenable number.

52021332 is an abundant number, since it is smaller than the sum of its proper divisors (95113068).

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

52021332 is a wasteful number, since it uses less digits than its factorization.

52021332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43813 (or 43805 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 52021332 is about 7212.5815073384. The cubic root of 52021332 is about 373.3021484014.

Adding to 52021332 its reverse (23312025), we get a palindrome (75333357).

The spelling of 52021332 in words is "fifty-two million, twenty-one thousand, three hundred thirty-two".