52156740 has 48 divisors (see below), whose sum is σ = 146962368. Its totient is φ = 13820544.

The previous prime is 52156723. The next prime is 52156747. The reversal of 52156740 is 4765125.

52156740 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 52156698 and 52156707.

It is not an unprimeable number, because it can be changed into a prime (52156747) 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, 7114 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (3061716).

Almost surely, 2^52156740 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 52156740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73481184).

52156740 is an abundant number, since it is smaller than the sum of its proper divisors (94805628).

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

52156740 is a wasteful number, since it uses less digits than its factorization.

52156740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508 (or 5506 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 52156740 is about 7221.9623372045. The cubic root of 52156740 is about 373.6257611767.

The spelling of 52156740 in words is "fifty-two million, one hundred fifty-six thousand, seven hundred forty".