53989653 has 4 divisors (see below), whose sum is σ = 71986208. Its totient is φ = 35993100.

The previous prime is 53989643. The next prime is 53989673. The reversal of 53989653 is 35698935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53989653 - 2⁶ = 53989589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53989643) 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, 8998273 + ... + 8998278.

It is an arithmetic number, because the mean of its divisors is an integer number (17996552).

Almost surely, 2^53989653 is an apocalyptic number.

It is an amenable number.

53989653 is a deficient number, since it is larger than the sum of its proper divisors (17996555).

53989653 is a wasteful number, since it uses less digits than its factorization.

53989653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17996554.

The product of its digits is 874800, while the sum is 48.

The square root of 53989653 is about 7347.7651704447. The cubic root of 53989653 is about 377.9521719391.

It can be divided in two parts, 5398 and 9653, that added together give a palindrome (15051).

The spelling of 53989653 in words is "fifty-three million, nine hundred eighty-nine thousand, six hundred fifty-three".