53921560 has 192 divisors, whose sum is σ = 160302240. Its totient is φ = 16128000.

The previous prime is 53921557. The next prime is 53921573. The reversal of 53921560 is 6512935.

53921560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 883930 + ... + 883990.

Almost surely, 2^53921560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53921560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80151120).

53921560 is an abundant number, since it is smaller than the sum of its proper divisors (106380680).

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

53921560 is a wasteful number, since it uses less digits than its factorization.

53921560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 53921560 is about 7343.1301227746. The cubic root of 53921560 is about 377.7932110829.

The spelling of 53921560 in words is "fifty-three million, nine hundred twenty-one thousand, five hundred sixty".