52481720 has 64 divisors (see below), whose sum is σ = 126321120. Its totient is φ = 19554304.

The previous prime is 52481707. The next prime is 52481747. The reversal of 52481720 is 2718425.

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, 76499 + ... + 77181.

Almost surely, 2^52481720 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 52481720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63160560).

52481720 is an abundant number, since it is smaller than the sum of its proper divisors (73839400).

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

52481720 is a wasteful number, since it uses less digits than its factorization.

52481720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 52481720 is about 7244.4268234278. The cubic root of 52481720 is about 374.4001550819.

The spelling of 52481720 in words is "fifty-two million, four hundred eighty-one thousand, seven hundred twenty".