53559947 has 4 divisors (see below), whose sum is σ = 61211376. Its totient is φ = 45908520.

The previous prime is 53559937. The next prime is 53559949. The reversal of 53559947 is 74995535.

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

It is not a de Polignac number, because 53559947 - 2²² = 49365643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53559949) 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, 3825704 + ... + 3825717.

It is an arithmetic number, because the mean of its divisors is an integer number (15302844).

Almost surely, 2^53559947 is an apocalyptic number.

53559947 is a deficient number, since it is larger than the sum of its proper divisors (7651429).

53559947 is an equidigital number, since it uses as much as digits as its factorization.

53559947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651428.

The product of its digits is 850500, while the sum is 47.

The square root of 53559947 is about 7318.4661644364. The cubic root of 53559947 is about 376.9467873027.

The spelling of 53559947 in words is "fifty-three million, five hundred fifty-nine thousand, nine hundred forty-seven".