53503873 has 4 divisors (see below), whose sum is σ = 53844820. Its totient is φ = 53162928.

The previous prime is 53503859. The next prime is 53503889. The reversal of 53503873 is 37830535.

It is a happy number.

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 38850289 + 14653584 = 6233^2 + 3828^2 .

It is a cyclic number.

It is not a de Polignac number, because 53503873 - 2⁹ = 53503361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53503823) 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, 170238 + ... + 170551.

It is an arithmetic number, because the mean of its divisors is an integer number (13461205).

Almost surely, 2^53503873 is an apocalyptic number.

It is an amenable number.

53503873 is a deficient number, since it is larger than the sum of its proper divisors (340947).

53503873 is a wasteful number, since it uses less digits than its factorization.

53503873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340946.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 53503873 is about 7314.6341672021. The cubic root of 53503873 is about 376.8151945984.

The spelling of 53503873 in words is "fifty-three million, five hundred three thousand, eight hundred seventy-three".