55621042631303 has 4 divisors (see below), whose sum is σ = 58039348832688. Its totient is φ = 53202736429920.

The previous prime is 55621042631293. The next prime is 55621042631311. The reversal of 55621042631303 is 30313624012655.

55621042631303 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 is a cyclic number.

It is not a de Polignac number, because 55621042631303 - 2⁸ = 55621042631047 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 (55621042636303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209153100658 + ... + 1209153100703.

It is an arithmetic number, because the mean of its divisors is an integer number (14509837208172).

Almost surely, 2^{55621042631303} is an apocalyptic number.

55621042631303 is a deficient number, since it is larger than the sum of its proper divisors (2418306201385).

55621042631303 is a wasteful number, since it uses less digits than its factorization.

55621042631303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418306201384.

The product of its (nonzero) digits is 388800, while the sum is 41.

Adding to 55621042631303 its reverse (30313624012655), we get a palindrome (85934666643958).

The spelling of 55621042631303 in words is "fifty-five trillion, six hundred twenty-one billion, forty-two million, six hundred thirty-one thousand, three hundred three".