53303280 has 80 divisors (see below), whose sum is σ = 169301664. Its totient is φ = 13864960.

The previous prime is 53303269. The next prime is 53303281. The reversal of 53303280 is 8230335.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 53303280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53303281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7132 + ... + 12548.

Almost surely, 2^53303280 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 53303280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84650832).

53303280 is an abundant number, since it is smaller than the sum of its proper divisors (115998384).

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

53303280 is a wasteful number, since it uses less digits than its factorization.

53303280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474 (or 5468 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 53303280 is about 7300.9095323802. The cubic root of 53303280 is about 376.3436950942.

The spelling of 53303280 in words is "fifty-three million, three hundred three thousand, two hundred eighty".