5235721320 has 128 divisors (see below), whose sum is σ = 16937424000. Its totient is φ = 1290424320.

The previous prime is 5235721313. The next prime is 5235721327. The reversal of 5235721320 is 231275325.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5235721313) and next prime (5235721327).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (5235721327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65476 + ... + 121484.

It is an arithmetic number, because the mean of its divisors is an integer number (132323625).

Almost surely, 2^5235721320 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 5235721320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8468712000).

5235721320 is an abundant number, since it is smaller than the sum of its proper divisors (11701702680).

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

5235721320 is a wasteful number, since it uses less digits than its factorization.

5235721320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56083 (or 56079 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 5235721320 is about 72358.2843909390. The cubic root of 5235721320 is about 1736.4362387373.

Adding to 5235721320 its reverse (231275325), we get a palindrome (5466996645).

The spelling of 5235721320 in words is "five billion, two hundred thirty-five million, seven hundred twenty-one thousand, three hundred twenty".