53329689 has 18 divisors (see below), whose sum is σ = 89609130. Its totient is φ = 30473856.

The previous prime is 53329681. The next prime is 53329693. The reversal of 53329689 is 98692335.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 2350089 = 7140^2 + 1533^2 .

It is not a de Polignac number, because 53329689 - 2³ = 53329681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53329681) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60024 + ... + 60905.

It is an arithmetic number, because the mean of its divisors is an integer number (4978285).

Almost surely, 2^53329689 is an apocalyptic number.

It is an amenable number.

53329689 is a deficient number, since it is larger than the sum of its proper divisors (36279441).

53329689 is a wasteful number, since it uses less digits than its factorization.

53329689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120949 (or 120939 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 53329689 is about 7302.7179186930. The cubic root of 53329689 is about 376.4058377347.

The spelling of 53329689 in words is "fifty-three million, three hundred twenty-nine thousand, six hundred eighty-nine".