52212535420 has 48 divisors (see below), whose sum is σ = 115592349600. Its totient is φ = 19755774720.

The previous prime is 52212535409. The next prime is 52212535429. The reversal of 52212535420 is 2453521225.

It is a super-2 number, since 2×52212535420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52212535429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147246 + ... + 355114.

It is an arithmetic number, because the mean of its divisors is an integer number (2408173950).

Almost surely, 2^52212535420 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 52212535420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57796174800).

52212535420 is an abundant number, since it is smaller than the sum of its proper divisors (63379814180).

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

52212535420 is a wasteful number, since it uses less digits than its factorization.

52212535420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208558 (or 208556 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 52212535420 in words is "fifty-two billion, two hundred twelve million, five hundred thirty-five thousand, four hundred twenty".