52440305 has 4 divisors (see below), whose sum is σ = 62928372. Its totient is φ = 41952240.

The previous prime is 52440301. The next prime is 52440329. The reversal of 52440305 is 50304425.

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 23107249 + 29333056 = 4807^2 + 5416^2 .

It is not a de Polignac number, because 52440305 - 2² = 52440301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52440301) 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, 5244026 + ... + 5244035.

It is an arithmetic number, because the mean of its divisors is an integer number (15732093).

Almost surely, 2^52440305 is an apocalyptic number.

It is an amenable number.

52440305 is a deficient number, since it is larger than the sum of its proper divisors (10488067).

52440305 is a wasteful number, since it uses less digits than its factorization.

52440305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10488066.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 52440305 is about 7241.5678550988. The cubic root of 52440305 is about 374.3016454617.

The spelling of 52440305 in words is "fifty-two million, four hundred forty thousand, three hundred five".