553601809 has 4 divisors (see below), whose sum is σ = 553658404. Its totient is φ = 553545216.

The previous prime is 553601791. The next prime is 553601837. The reversal of 553601809 is 908106355.

553601809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 477859600 + 75742209 = 21860^2 + 8703^2 .

It is a cyclic number.

It is not a de Polignac number, because 553601809 - 2⁵ = 553601777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553601869) 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, 9432 + ... + 34585.

It is an arithmetic number, because the mean of its divisors is an integer number (138414601).

Almost surely, 2^553601809 is an apocalyptic number.

553601809 is the 12577-th nonagonal number.

It is an amenable number.

553601809 is a deficient number, since it is larger than the sum of its proper divisors (56595).

553601809 is a wasteful number, since it uses less digits than its factorization.

553601809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56594.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 553601809 is about 23528.7443141363. The cubic root of 553601809 is about 821.1058889012.

The spelling of 553601809 in words is "five hundred fifty-three million, six hundred one thousand, eight hundred nine".