53547133 has 4 divisors (see below), whose sum is σ = 53856828. Its totient is φ = 53237440.

The previous prime is 53547121. The next prime is 53547181. The reversal of 53547133 is 33174535.

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 38477209 + 15069924 = 6203^2 + 3882^2 .

It is a cyclic number.

It is not a de Polignac number, because 53547133 - 2²⁵ = 19992701 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53547095 and 53547104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53547113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154588 + ... + 154933.

It is an arithmetic number, because the mean of its divisors is an integer number (13464207).

Almost surely, 2^53547133 is an apocalyptic number.

It is an amenable number.

53547133 is a deficient number, since it is larger than the sum of its proper divisors (309695).

53547133 is a wasteful number, since it uses less digits than its factorization.

53547133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309694.

The product of its digits is 18900, while the sum is 31.

The square root of 53547133 is about 7317.5906554002. The cubic root of 53547133 is about 376.9167239086.

The spelling of 53547133 in words is "fifty-three million, five hundred forty-seven thousand, one hundred thirty-three".