50505500501 has 4 divisors (see below), whose sum is σ = 50548631904. Its totient is φ = 50462369100.

The previous prime is 50505500491. The next prime is 50505500509. The reversal of 50505500501 is 10500550505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50505500501 is a prime.

It is a super-2 number, since 2×50505500501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50505500509) 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 3 ways as a sum of consecutive naturals, for example, 21563945 + ... + 21566286.

It is an arithmetic number, because the mean of its divisors is an integer number (12637157976).

Almost surely, 2^50505500501 is an apocalyptic number.

It is an amenable number.

50505500501 is a deficient number, since it is larger than the sum of its proper divisors (43131403).

50505500501 is a wasteful number, since it uses less digits than its factorization.

50505500501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43131402.

The product of its (nonzero) digits is 3125, while the sum is 26.

The spelling of 50505500501 in words is "fifty billion, five hundred five million, five hundred thousand, five hundred one".