53503273 has 4 divisors (see below), whose sum is σ = 53530708. Its totient is φ = 53475840.

The previous prime is 53503217. The next prime is 53503327. The reversal of 53503273 is 37230535.

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 15705369 + 37797904 = 3963^2 + 6148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53503273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53503213) 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, 10548 + ... + 14773.

It is an arithmetic number, because the mean of its divisors is an integer number (13382677).

Almost surely, 2^53503273 is an apocalyptic number.

It is an amenable number.

53503273 is a deficient number, since it is larger than the sum of its proper divisors (27435).

53503273 is a wasteful number, since it uses less digits than its factorization.

53503273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27434.

The product of its (nonzero) digits is 9450, while the sum is 28.

The square root of 53503273 is about 7314.5931534160. The cubic root of 53503273 is about 376.8137860402.

The spelling of 53503273 in words is "fifty-three million, five hundred three thousand, two hundred seventy-three".