52481646 has 72 divisors (see below), whose sum is σ = 133468920. Its totient is φ = 14859936.

The previous prime is 52481641. The next prime is 52481659. The reversal of 52481646 is 64618425.

52481646 is a `hidden beast` number, since 5 + 2 + 4 + 8 + 1 + 646 = 666.

52481646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52481646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52481641) 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 35 ways as a sum of consecutive naturals, for example, 138285 + ... + 138663.

It is an arithmetic number, because the mean of its divisors is an integer number (1853735).

Almost surely, 2^52481646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52481646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66734460).

52481646 is an abundant number, since it is smaller than the sum of its proper divisors (80987274).

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

52481646 is a wasteful number, since it uses less digits than its factorization.

52481646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 548 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 52481646 is about 7244.4217160516. The cubic root of 52481646 is about 374.3999791119.

The spelling of 52481646 in words is "fifty-two million, four hundred eighty-one thousand, six hundred forty-six".