52481609 has 4 divisors (see below), whose sum is σ = 53071380. Its totient is φ = 51891840.

The previous prime is 52481603. The next prime is 52481617. The reversal of 52481609 is 90618425.

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 11560000 + 40921609 = 3400^2 + 6397^2 .

It is a cyclic number.

It is not a de Polignac number, because 52481609 - 2⁴ = 52481593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52481603) 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, 294752 + ... + 294929.

It is an arithmetic number, because the mean of its divisors is an integer number (13267845).

Almost surely, 2^52481609 is an apocalyptic number.

It is an amenable number.

52481609 is a deficient number, since it is larger than the sum of its proper divisors (589771).

52481609 is an equidigital number, since it uses as much as digits as its factorization.

52481609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589770.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 52481609 is about 7244.4191623622. The cubic root of 52481609 is about 374.3998911268.

The spelling of 52481609 in words is "fifty-two million, four hundred eighty-one thousand, six hundred nine".