55309550303 has 24 divisors (see below), whose sum is σ = 67764232800. Its totient is φ = 44209939968.

The previous prime is 55309550299. The next prime is 55309550327. The reversal of 55309550303 is 30305590355.

It is a happy number.

It is not a de Polignac number, because 55309550303 - 2² = 55309550299 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 (55309550003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95093 + ... + 345921.

It is an arithmetic number, because the mean of its divisors is an integer number (2823509700).

Almost surely, 2^55309550303 is an apocalyptic number.

55309550303 is a deficient number, since it is larger than the sum of its proper divisors (12454682497).

55309550303 is a wasteful number, since it uses less digits than its factorization.

55309550303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250979 (or 250962 counting only the distinct ones).

The product of its (nonzero) digits is 151875, while the sum is 38.

The spelling of 55309550303 in words is "fifty-five billion, three hundred nine million, five hundred fifty thousand, three hundred three".