50505555501 has 6 divisors (see below), whose sum is σ = 72952469070. Its totient is φ = 33670370328.

The previous prime is 50505555473. The next prime is 50505555509. The reversal of 50505555501 is 10555550505.

It is a happy number.

50505555501 is a `hidden beast` number, since 5 + 0 + 50 + 5 + 55 + 550 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50227533225 + 278022276 = 224115^2 + 16674^2 .

It is not a de Polignac number, because 50505555501 - 2⁵ = 50505555469 is a prime.

It is a super-2 number, since 2×50505555501² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50505555509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2805864186 + ... + 2805864203.

It is an arithmetic number, because the mean of its divisors is an integer number (12158744845).

Almost surely, 2^50505555501 is an apocalyptic number.

It is an amenable number.

50505555501 is a deficient number, since it is larger than the sum of its proper divisors (22446913569).

50505555501 is a wasteful number, since it uses less digits than its factorization.

50505555501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611728395 (or 5611728392 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 50505555501 in words is "fifty billion, five hundred five million, five hundred fifty-five thousand, five hundred one".