53447305 has 8 divisors (see below), whose sum is σ = 64705032. Its totient is φ = 42379008.

The previous prime is 53447287. The next prime is 53447327. The reversal of 53447305 is 50374435.

53447305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4293184 + 49154121 = 2072^2 + 7011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53447305 - 2²¹ = 51350153 is a prime.

It is a super-2 number, since 2×53447305² = 5713228823526050, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 46734 + ... + 47863.

It is an arithmetic number, because the mean of its divisors is an integer number (8088129).

Almost surely, 2^53447305 is an apocalyptic number.

It is an amenable number.

53447305 is a deficient number, since it is larger than the sum of its proper divisors (11257727).

53447305 is a wasteful number, since it uses less digits than its factorization.

53447305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94715.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 53447305 is about 7310.7663756955. The cubic root of 53447305 is about 376.6823493962.

The spelling of 53447305 in words is "fifty-three million, four hundred forty-seven thousand, three hundred five".