53323009 has 4 divisors (see below), whose sum is σ = 53662804. Its totient is φ = 52983216.

The previous prime is 53322989. The next prime is 53323013. The reversal of 53323009 is 90032335.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30283009 + 23040000 = 5503^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 53323009 - 2⁵ = 53322977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53323099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169662 + ... + 169975.

It is an arithmetic number, because the mean of its divisors is an integer number (13415701).

Almost surely, 2^53323009 is an apocalyptic number.

It is an amenable number.

53323009 is a deficient number, since it is larger than the sum of its proper divisors (339795).

53323009 is a wasteful number, since it uses less digits than its factorization.

53323009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339794.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 53323009 is about 7302.2605404080. The cubic root of 53323009 is about 376.3901210608.

The spelling of 53323009 in words is "fifty-three million, three hundred twenty-three thousand, nine".