53258720 has 48 divisors (see below), whose sum is σ = 126862848. Its totient is φ = 21127680.

The previous prime is 53258717. The next prime is 53258749. The reversal of 53258720 is 2785235.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19010 + ... + 21630.

It is an arithmetic number, because the mean of its divisors is an integer number (2642976).

Almost surely, 2^53258720 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 53258720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63431424).

53258720 is an abundant number, since it is smaller than the sum of its proper divisors (73604128).

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

53258720 is a wasteful number, since it uses less digits than its factorization.

53258720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 53258720 is about 7297.8572197598. The cubic root of 53258720 is about 376.2387950438.

The spelling of 53258720 in words is "fifty-three million, two hundred fifty-eight thousand, seven hundred twenty".