50505525557 has 4 divisors (see below), whose sum is σ = 50547026796. Its totient is φ = 50464024320.

The previous prime is 50505525533. The next prime is 50505525571. The reversal of 50505525557 is 75552550505.

50505525557 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, and also an emirpimes, since its reverse is a distinct semiprime: 75552550505 = 5 ⋅15110510101.

It can be written as a sum of positive squares in 2 ways, for example, as 31994834641 + 18510690916 = 178871^2 + 136054^2 .

It is a cyclic number.

It is not a de Polignac number, because 50505525557 - 2³⁴ = 33325656373 is a prime.

It is a super-2 number, since 2×50505525557² (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 (50505525757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20748794 + ... + 20751227.

It is an arithmetic number, because the mean of its divisors is an integer number (12636756699).

Almost surely, 2^50505525557 is an apocalyptic number.

It is an amenable number.

50505525557 is a deficient number, since it is larger than the sum of its proper divisors (41501239).

50505525557 is a wasteful number, since it uses less digits than its factorization.

50505525557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41501238.

The product of its (nonzero) digits is 1093750, while the sum is 44.

The spelling of 50505525557 in words is "fifty billion, five hundred five million, five hundred twenty-five thousand, five hundred fifty-seven".