52115560 has 64 divisors (see below), whose sum is σ = 134640000. Its totient is φ = 17784576.

The previous prime is 52115549. The next prime is 52115561. The reversal of 52115560 is 6551125.

It is a super-2 number, since 2×52115560² = 5432063188227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52115561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104191 + ... + 104689.

It is an arithmetic number, because the mean of its divisors is an integer number (2103750).

Almost surely, 2^52115560 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 52115560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67320000).

52115560 is an abundant number, since it is smaller than the sum of its proper divisors (82524440).

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

52115560 is a wasteful number, since it uses less digits than its factorization.

52115560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 52115560 is about 7219.1107485618. The cubic root of 52115560 is about 373.5274040586.

Adding to 52115560 its reverse (6551125), we get a palindrome (58666685).

The spelling of 52115560 in words is "fifty-two million, one hundred fifteen thousand, five hundred sixty".