53495439 has 4 divisors (see below), whose sum is σ = 71327256. Its totient is φ = 35663624.

The previous prime is 53495411. The next prime is 53495441. The reversal of 53495439 is 93459435.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 53495439 - 2⁹ = 53494927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53495439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53495339) 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, 8915904 + ... + 8915909.

It is an arithmetic number, because the mean of its divisors is an integer number (17831814).

Almost surely, 2^53495439 is an apocalyptic number.

53495439 is a deficient number, since it is larger than the sum of its proper divisors (17831817).

53495439 is a wasteful number, since it uses less digits than its factorization.

53495439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17831816.

The product of its digits is 291600, while the sum is 42.

The square root of 53495439 is about 7314.0576289772. The cubic root of 53495439 is about 376.7953939984.

The spelling of 53495439 in words is "fifty-three million, four hundred ninety-five thousand, four hundred thirty-nine".