53421536 has 48 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 22565760.

The previous prime is 53421527. The next prime is 53421547. The reversal of 53421536 is 63512435.

53421536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 53421499 and 53421508.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14225 + ... + 17583.

It is an arithmetic number, because the mean of its divisors is an integer number (2540160).

Almost surely, 2^53421536 is an apocalyptic number.

53421536 is a gapful number since it is divisible by the number (56) 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 53421536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60963840).

53421536 is an abundant number, since it is smaller than the sum of its proper divisors (68506144).

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

53421536 is a wasteful number, since it uses less digits than its factorization.

53421536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447 (or 3439 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 53421536 is about 7309.0037624836. The cubic root of 53421536 is about 376.6218019849.

The spelling of 53421536 in words is "fifty-three million, four hundred twenty-one thousand, five hundred thirty-six".