55102321 has 8 divisors (see below), whose sum is σ = 58423680. Its totient is φ = 51789888.

The previous prime is 55102301. The next prime is 55102331. The reversal of 55102321 is 12320155.

55102321 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 not a de Polignac number, because 55102321 - 2⁷ = 55102193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55102301) 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, 13860 + ... + 17386.

It is an arithmetic number, because the mean of its divisors is an integer number (7302960).

Almost surely, 2^55102321 is an apocalyptic number.

It is an amenable number.

55102321 is a deficient number, since it is larger than the sum of its proper divisors (3321359).

55102321 is a wasteful number, since it uses less digits than its factorization.

55102321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4463.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55102321 is about 7423.0937620375. The cubic root of 55102321 is about 380.5309314354.

Adding to 55102321 its reverse (12320155), we get a palindrome (67422476).

The spelling of 55102321 in words is "fifty-five million, one hundred two thousand, three hundred twenty-one".