53821500 has 96 divisors (see below), whose sum is σ = 159921216. Its totient is φ = 14060800.

The previous prime is 53821489. The next prime is 53821501. The reversal of 53821500 is 512835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53821501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79162 + ... + 79838.

It is an arithmetic number, because the mean of its divisors is an integer number (1665846).

Almost surely, 2^53821500 is an apocalyptic number.

53821500 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 53821500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79960608).

53821500 is an abundant number, since it is smaller than the sum of its proper divisors (106099716).

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

53821500 is a wasteful number, since it uses less digits than its factorization.

53821500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 53821500 is about 7336.3137882727. The cubic root of 53821500 is about 377.5593813287.

The spelling of 53821500 in words is "fifty-three million, eight hundred twenty-one thousand, five hundred".