52140660 has 192 divisors, whose sum is σ = 176117760. Its totient is φ = 11358720.

The previous prime is 52140653. The next prime is 52140677. The reversal of 52140660 is 6604125.

It is a self number, because there is not a number n which added to its sum of digits gives 52140660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 506169 + ... + 506271.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^52140660 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 52140660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

52140660 is an abundant number, since it is smaller than the sum of its proper divisors (123977100).

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

52140660 is a wasteful number, since it uses less digits than its factorization.

52140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 52140660 is about 7220.8489805562. The cubic root of 52140660 is about 373.5873607720.

Adding to 52140660 its reverse (6604125), we get a palindrome (58744785).

The spelling of 52140660 in words is "fifty-two million, one hundred forty thousand, six hundred sixty".