52447481 has 4 divisors (see below), whose sum is σ = 52911732. Its totient is φ = 51983232.

The previous prime is 52447477. The next prime is 52447489. The reversal of 52447481 is 18474425.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8357881 + 44089600 = 2891^2 + 6640^2 .

It is a cyclic number.

It is not a de Polignac number, because 52447481 - 2² = 52447477 is a prime.

It is a super-2 number, since 2×52447481² = 5501476526490722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52447489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231956 + ... + 232181.

It is an arithmetic number, because the mean of its divisors is an integer number (13227933).

Almost surely, 2^52447481 is an apocalyptic number.

It is an amenable number.

52447481 is a deficient number, since it is larger than the sum of its proper divisors (464251).

52447481 is a wasteful number, since it uses less digits than its factorization.

52447481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464250.

The product of its digits is 35840, while the sum is 35.

The square root of 52447481 is about 7242.0633109633. The cubic root of 52447481 is about 374.3187179920.

The spelling of 52447481 in words is "fifty-two million, four hundred forty-seven thousand, four hundred eighty-one".