53993500 has 48 divisors (see below), whose sum is σ = 128655072. Its totient is φ = 19632000.

The previous prime is 53993483. The next prime is 53993503. The reversal of 53993500 is 539935.

It is a happy number.

53993500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53993503) 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, 592 + ... + 10408.

It is an arithmetic number, because the mean of its divisors is an integer number (2680314).

Almost surely, 2^53993500 is an apocalyptic number.

53993500 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 53993500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64327536).

53993500 is an abundant number, since it is smaller than the sum of its proper divisors (74661572).

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

53993500 is a wasteful number, since it uses less digits than its factorization.

53993500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9847 (or 9835 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 53993500 is about 7348.0269460584. The cubic root of 53993500 is about 377.9611486436.

Multiplying 53993500 by its reverse (539935), we get a square (29152980422500 = 5399350²).

53993500 divided by its reverse (539935) gives a square (100 = 10²).

The spelling of 53993500 in words is "fifty-three million, nine hundred ninety-three thousand, five hundred".