53503473 has 4 divisors (see below), whose sum is σ = 71337968. Its totient is φ = 35668980.

The previous prime is 53503441. The next prime is 53503477. The reversal of 53503473 is 37430535.

53503473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53503473 - 2⁵ = 53503441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53503473.

It is not an unprimeable number, because it can be changed into a prime (53503477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8917243 + ... + 8917248.

It is an arithmetic number, because the mean of its divisors is an integer number (17834492).

Almost surely, 2^53503473 is an apocalyptic number.

It is an amenable number.

53503473 is a deficient number, since it is larger than the sum of its proper divisors (17834495).

53503473 is a wasteful number, since it uses less digits than its factorization.

53503473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17834494.

The product of its (nonzero) digits is 18900, while the sum is 30.

The square root of 53503473 is about 7314.6068247036. The cubic root of 53503473 is about 376.8142555607.

The spelling of 53503473 in words is "fifty-three million, five hundred three thousand, four hundred seventy-three".