53447472 has 160 divisors (see below), whose sum is σ = 171100160. Its totient is φ = 15863040.

The previous prime is 53447467. The next prime is 53447491. The reversal of 53447472 is 27474435.

53447472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173943 + ... + 174249.

It is an arithmetic number, because the mean of its divisors is an integer number (1069376).

Almost surely, 2^53447472 is an apocalyptic number.

53447472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53447472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85550080).

53447472 is an abundant number, since it is smaller than the sum of its proper divisors (117652688).

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

53447472 is a wasteful number, since it uses less digits than its factorization.

53447472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 356 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 53447472 is about 7310.7777971978. Note that the first 4 decimals coincide. The cubic root of 53447472 is about 376.6827417196.

The spelling of 53447472 in words is "fifty-three million, four hundred forty-seven thousand, four hundred seventy-two".