50315515521 has 8 divisors (see below), whose sum is σ = 67751585664. Its totient is φ = 33211561200.

The previous prime is 50315515517. The next prime is 50315515531. The reversal of 50315515521 is 12551551305.

50315515521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 50315515521 - 2² = 50315515517 is a prime.

It is a super-2 number, since 2×50315515521² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50315515511) 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, 83028601 + ... + 83029206.

It is an arithmetic number, because the mean of its divisors is an integer number (8468948208).

Almost surely, 2^50315515521 is an apocalyptic number.

It is an amenable number.

50315515521 is a deficient number, since it is larger than the sum of its proper divisors (17436070143).

50315515521 is a wasteful number, since it uses less digits than its factorization.

50315515521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166057911.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 50315515521 in words is "fifty billion, three hundred fifteen million, five hundred fifteen thousand, five hundred twenty-one".