55305305527503 has 8 divisors (see below), whose sum is σ = 73915562733616. Its totient is φ = 36782626003200.

The previous prime is 55305305527499. The next prime is 55305305527513. The reversal of 55305305527503 is 30572550350355.

It is a happy number.

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

It is not a de Polignac number, because 55305305527503 - 2² = 55305305527499 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 (55305305527513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21894418978 + ... + 21894421503.

It is an arithmetic number, because the mean of its divisors is an integer number (9239445341702).

Almost surely, 2^{55305305527503} is an apocalyptic number.

55305305527503 is a deficient number, since it is larger than the sum of its proper divisors (18610257206113).

55305305527503 is a wasteful number, since it uses less digits than its factorization.

55305305527503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43788840905.

The product of its (nonzero) digits is 5906250, while the sum is 48.

Adding to 55305305527503 its reverse (30572550350355), we get a palindrome (85877855877858).

The spelling of 55305305527503 in words is "fifty-five trillion, three hundred five billion, three hundred five million, five hundred twenty-seven thousand, five hundred three".