53531500 has 48 divisors (see below), whose sum is σ = 127554336. Its totient is φ = 19464000.

The previous prime is 53531483. The next prime is 53531501. The reversal of 53531500 is 513535.

It is a happy number.

53531500 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 (22).

It is not an unprimeable number, because it can be changed into a prime (53531501) 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, 634 + ... + 10366.

It is an arithmetic number, because the mean of its divisors is an integer number (2657382).

Almost surely, 2^53531500 is an apocalyptic number.

53531500 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 53531500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63777168).

53531500 is an abundant number, since it is smaller than the sum of its proper divisors (74022836).

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

53531500 is a wasteful number, since it uses less digits than its factorization.

53531500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9763 (or 9751 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 53531500 is about 7316.5223979702. The cubic root of 53531500 is about 376.8800402598.

The spelling of 53531500 in words is "fifty-three million, five hundred thirty-one thousand, five hundred".