52855340 has 48 divisors (see below), whose sum is σ = 117465600. Its totient is φ = 19922112.

The previous prime is 52855337. The next prime is 52855343. The reversal of 52855340 is 4355825.

It is an interprime number because it is at equal distance from previous prime (52855337) and next prime (52855343).

It is a junction number, because it is equal to n+sod(n) for n = 52855297 and 52855306.

It is not an unprimeable number, because it can be changed into a prime (52855343) 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, 139271 + ... + 139649.

It is an arithmetic number, because the mean of its divisors is an integer number (2447200).

Almost surely, 2^52855340 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 52855340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58732800).

52855340 is an abundant number, since it is smaller than the sum of its proper divisors (64610260).

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

52855340 is a wasteful number, since it uses less digits than its factorization.

52855340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 52855340 is about 7270.1678109931. The cubic root of 52855340 is about 375.2865128904.

The spelling of 52855340 in words is "fifty-two million, eight hundred fifty-five thousand, three hundred forty".