55352009 has 4 divisors (see below), whose sum is σ = 56702100. Its totient is φ = 54001920.

The previous prime is 55351987. The next prime is 55352027. The reversal of 55352009 is 90025355.

55352009 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.

It can be written as a sum of positive squares in 2 ways, for example, as 5508409 + 49843600 = 2347^2 + 7060^2 .

It is not a de Polignac number, because 55352009 - 2⁸ = 55351753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55352809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674984 + ... + 675065.

It is an arithmetic number, because the mean of its divisors is an integer number (14175525).

Almost surely, 2^55352009 is an apocalyptic number.

It is an amenable number.

55352009 is a deficient number, since it is larger than the sum of its proper divisors (1350091).

55352009 is a wasteful number, since it uses less digits than its factorization.

55352009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350090.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 55352009 is about 7439.8930771887. The cubic root of 55352009 is about 381.1048386182.

The spelling of 55352009 in words is "fifty-five million, three hundred fifty-two thousand, nine".