53400312 has 48 divisors (see below), whose sum is σ = 165288240. Its totient is φ = 15257088.

The previous prime is 53400289. The next prime is 53400323. The reversal of 53400312 is 21300435.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52473 + ... + 53480.

It is an arithmetic number, because the mean of its divisors is an integer number (3443505).

Almost surely, 2^53400312 is an apocalyptic number.

It is an amenable number.

53400312 is an abundant number, since it is smaller than the sum of its proper divisors (111887928).

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

53400312 is a wasteful number, since it uses less digits than its factorization.

53400312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105972 (or 105965 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53400312 is about 7307.5517103884. The cubic root of 53400312 is about 376.5719189818.

Adding to 53400312 its reverse (21300435), we get a palindrome (74700747).

The spelling of 53400312 in words is "fifty-three million, four hundred thousand, three hundred twelve".