52211712 has 104 divisors (see below), whose sum is σ = 159364096. Its totient is φ = 14893056.

The previous prime is 52211707. The next prime is 52211741. The reversal of 52211712 is 21711225.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85713 + ... + 86319.

Almost surely, 2^52211712 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 52211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79682048).

52211712 is an abundant number, since it is smaller than the sum of its proper divisors (107152384).

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

52211712 is an equidigital number, since it uses as much as digits as its factorization.

52211712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 619 counting only the distinct ones).

The product of its digits is 280, while the sum is 21.

The square root of 52211712 is about 7225.7672257000. The cubic root of 52211712 is about 373.7569793964.

Adding to 52211712 its reverse (21711225), we get a palindrome (73922937).

The spelling of 52211712 in words is "fifty-two million, two hundred eleven thousand, seven hundred twelve".