53065188 has 72 divisors (see below), whose sum is σ = 147865536. Its totient is φ = 15912000.

The previous prime is 53065183. The next prime is 53065189. The reversal of 53065188 is 88156035.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53065183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40138 + ... + 41438.

It is an arithmetic number, because the mean of its divisors is an integer number (2053688).

Almost surely, 2^53065188 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 53065188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73932768).

53065188 is an abundant number, since it is smaller than the sum of its proper divisors (94800348).

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

53065188 is a wasteful number, since it uses less digits than its factorization.

53065188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 53065188 is about 7284.5856436725. The cubic root of 53065188 is about 375.7825153170.

The spelling of 53065188 in words is "fifty-three million, sixty-five thousand, one hundred eighty-eight".