55003321 has 8 divisors (see below), whose sum is σ = 56386880. Its totient is φ = 53624592.

The previous prime is 55003307. The next prime is 55003337. The reversal of 55003321 is 12330055.

55003321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55003321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55003121) 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 7 ways as a sum of consecutive naturals, for example, 34876 + ... + 36418.

It is an arithmetic number, because the mean of its divisors is an integer number (7048360).

Almost surely, 2^55003321 is an apocalyptic number.

It is an amenable number.

55003321 is a deficient number, since it is larger than the sum of its proper divisors (1383559).

55003321 is a wasteful number, since it uses less digits than its factorization.

55003321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55003321 is about 7416.4223854902. The cubic root of 55003321 is about 380.3029002282.

Adding to 55003321 its reverse (12330055), we get a palindrome (67333376).

The spelling of 55003321 in words is "fifty-five million, three thousand, three hundred twenty-one".