52510720 has 60 divisors (see below), whose sum is σ = 126218484. Its totient is φ = 20971520.

The previous prime is 52510693. The next prime is 52510723. The reversal of 52510720 is 2701525.

It can be written as a sum of positive squares in 2 ways, for example, as 34668544 + 17842176 = 5888^2 + 4224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52510691 and 52510700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52510723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81600 + ... + 82240.

Almost surely, 2^52510720 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 52510720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63109242).

52510720 is an abundant number, since it is smaller than the sum of its proper divisors (73707764).

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

52510720 is an frugal number, since it uses more digits than its factorization.

52510720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 52510720 is about 7246.4280856157. The cubic root of 52510720 is about 374.4691035668.

The spelling of 52510720 in words is "fifty-two million, five hundred ten thousand, seven hundred twenty".