5252921720 has 64 divisors (see below), whose sum is σ = 12085632000. Its totient is φ = 2054302848.

The previous prime is 5252921671. The next prime is 5252921761. The reversal of 5252921720 is 271292525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317411 + ... + 333549.

It is an arithmetic number, because the mean of its divisors is an integer number (188838000).

Almost surely, 2^5252921720 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 5252921720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6042816000).

5252921720 is an abundant number, since it is smaller than the sum of its proper divisors (6832710280).

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

5252921720 is a wasteful number, since it uses less digits than its factorization.

5252921720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16332 (or 16328 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 5252921720 is about 72477.0427100886. The cubic root of 5252921720 is about 1738.3356746069.

The spelling of 5252921720 in words is "five billion, two hundred fifty-two million, nine hundred twenty-one thousand, seven hundred twenty".