223553009 has 12 divisors (see below), whose sum is σ = 241887204. Its totient is φ = 205891584.

The previous prime is 223553003. The next prime is 223553021. The reversal of 223553009 is 900355322.

It can be written as a sum of positive squares in 2 ways, for example, as 68425984 + 155127025 = 8272^2 + 12455^2 .

It is not a de Polignac number, because 223553009 - 2²⁰ = 222504433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223553003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34577 + ... + 40529.

It is an arithmetic number, because the mean of its divisors is an integer number (20157267).

Almost surely, 2^223553009 is an apocalyptic number.

It is an amenable number.

223553009 is a deficient number, since it is larger than the sum of its proper divisors (18334195).

223553009 is an equidigital number, since it uses as much as digits as its factorization.

223553009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064 (or 6017 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 223553009 is about 14951.6891687862. The cubic root of 223553009 is about 606.9135587232.

The spelling of 223553009 in words is "two hundred twenty-three million, five hundred fifty-three thousand, nine".