53531520 has 192 divisors, whose sum is σ = 198838800. Its totient is φ = 12214272.

The previous prime is 53531509. The next prime is 53531539. The reversal of 53531520 is 2513535.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93796 + ... + 94364.

Almost surely, 2^53531520 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 53531520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99419400).

53531520 is an abundant number, since it is smaller than the sum of its proper divisors (145307280).

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

53531520 is a wasteful number, since it uses less digits than its factorization.

53531520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 53531520 is about 7316.5237647396. The cubic root of 53531520 is about 376.8800871954.

The spelling of 53531520 in words is "fifty-three million, five hundred thirty-one thousand, five hundred twenty".