52015340 has 48 divisors (see below), whose sum is σ = 120836352. Its totient is φ = 18683136.

The previous prime is 52015297. The next prime is 52015343. The reversal of 52015340 is 4351025.

52015340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (52015343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6917 + ... + 12323.

It is an arithmetic number, because the mean of its divisors is an integer number (2517424).

Almost surely, 2^52015340 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 52015340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60418176).

52015340 is an abundant number, since it is smaller than the sum of its proper divisors (68821012).

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

52015340 is a wasteful number, since it uses less digits than its factorization.

52015340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466 (or 5464 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 52015340 is about 7212.1661101225. The cubic root of 52015340 is about 373.2878150996.

Adding to 52015340 its reverse (4351025), we get a palindrome (56366365).

The spelling of 52015340 in words is "fifty-two million, fifteen thousand, three hundred forty".