53399271 has 4 divisors (see below), whose sum is σ = 71199032. Its totient is φ = 35599512.

The previous prime is 53399263. The next prime is 53399293. The reversal of 53399271 is 17299335.

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

It is not a de Polignac number, because 53399271 - 2³ = 53399263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53399471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8899876 + ... + 8899881.

It is an arithmetic number, because the mean of its divisors is an integer number (17799758).

Almost surely, 2^53399271 is an apocalyptic number.

53399271 is a deficient number, since it is larger than the sum of its proper divisors (17799761).

53399271 is a wasteful number, since it uses less digits than its factorization.

53399271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17799760.

The product of its digits is 51030, while the sum is 39.

The square root of 53399271 is about 7307.4804823551. The cubic root of 53399271 is about 376.5694719679.

The spelling of 53399271 in words is "fifty-three million, three hundred ninety-nine thousand, two hundred seventy-one".