53280312 has 32 divisors (see below), whose sum is σ = 141037200. Its totient is φ = 16715264.

The previous prime is 53280307. The next prime is 53280319. The reversal of 53280312 is 21308235.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53280319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64887 + ... + 65702.

Almost surely, 2^53280312 is an apocalyptic number.

It is an amenable number.

53280312 is an abundant number, since it is smaller than the sum of its proper divisors (87756888).

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

53280312 is a wasteful number, since it uses less digits than its factorization.

53280312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130615 (or 130611 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 53280312 is about 7299.3364081949. The cubic root of 53280312 is about 376.2896327312.

Adding to 53280312 its reverse (21308235), we get a palindrome (74588547).

The spelling of 53280312 in words is "fifty-three million, two hundred eighty thousand, three hundred twelve".