53005660 has 96 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 18723840.

The previous prime is 53005651. The next prime is 53005663. The reversal of 53005660 is 6650035.

53005660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53005663) 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 31 ways as a sum of consecutive naturals, for example, 495327 + ... + 495433.

It is an arithmetic number, because the mean of its divisors is an integer number (1306368).

Almost surely, 2^53005660 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 53005660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62705664).

53005660 is an abundant number, since it is smaller than the sum of its proper divisors (72405668).

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

53005660 is a wasteful number, since it uses less digits than its factorization.

53005660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 53005660 is about 7280.4986092987. The cubic root of 53005660 is about 375.6419463785.

Adding to 53005660 its reverse (6650035), we get a palindrome (59655695).

The spelling of 53005660 in words is "fifty-three million, five thousand, six hundred sixty".