53497439 has 4 divisors (see below), whose sum is σ = 53516400. Its totient is φ = 53478480.

The previous prime is 53497429. The next prime is 53497447. The reversal of 53497439 is 93479435.

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 53497439 - 2¹² = 53493343 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 53497439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53497429) 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, 4307 + ... + 11204.

It is an arithmetic number, because the mean of its divisors is an integer number (13379100).

Almost surely, 2^53497439 is an apocalyptic number.

53497439 is a deficient number, since it is larger than the sum of its proper divisors (18961).

53497439 is a wasteful number, since it uses less digits than its factorization.

53497439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18960.

The product of its digits is 408240, while the sum is 44.

The square root of 53497439 is about 7314.1943507129. The cubic root of 53497439 is about 376.8000896100.

The spelling of 53497439 in words is "fifty-three million, four hundred ninety-seven thousand, four hundred thirty-nine".