53128600 has 96 divisors (see below), whose sum is σ = 142714080. Its totient is φ = 18017280.

The previous prime is 53128591. The next prime is 53128601. The reversal of 53128600 is 682135.

It is a happy number.

53128600 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 (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53128601) 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 23 ways as a sum of consecutive naturals, for example, 191662 + ... + 191938.

It is an arithmetic number, because the mean of its divisors is an integer number (1486605).

Almost surely, 2^53128600 is an apocalyptic number.

53128600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53128600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71357040).

53128600 is an abundant number, since it is smaller than the sum of its proper divisors (89585480).

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

53128600 is a wasteful number, since it uses less digits than its factorization.

53128600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 53128600 is about 7288.9368223356. The cubic root of 53128600 is about 375.9321403113.

The spelling of 53128600 in words is "fifty-three million, one hundred twenty-eight thousand, six hundred".