53447825 has 6 divisors (see below), whose sum is σ = 66275334. Its totient is φ = 42758240.

The previous prime is 53447819. The next prime is 53447851. The reversal of 53447825 is 52874435.

It is a happy number.

53447825 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 3 ways, for example, as 12475024 + 40972801 = 3532^2 + 6401^2 .

It is not a de Polignac number, because 53447825 - 2¹⁰ = 53446801 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 1068932 + ... + 1068981.

It is an arithmetic number, because the mean of its divisors is an integer number (11045889).

Almost surely, 2^53447825 is an apocalyptic number.

It is an amenable number.

53447825 is a deficient number, since it is larger than the sum of its proper divisors (12827509).

53447825 is a wasteful number, since it uses less digits than its factorization.

53447825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137923 (or 2137918 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 53447825 is about 7310.8019395960. The cubic root of 53447825 is about 376.6835709993.

The spelling of 53447825 in words is "fifty-three million, four hundred forty-seven thousand, eight hundred twenty-five".