50217712021 has 4 divisors (see below), whose sum is σ = 50218163500. Its totient is φ = 50217260544.

The previous prime is 50217712001. The next prime is 50217712031. The reversal of 50217712021 is 12021771205.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26866815921 + 23350896100 = 163911^2 + 152810^2 .

It is a cyclic number.

It is not a de Polignac number, because 50217712021 - 2¹⁷ = 50217580949 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 (50217712001) 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, 72055 + ... + 325003.

It is an arithmetic number, because the mean of its divisors is an integer number (12554540875).

Almost surely, 2^50217712021 is an apocalyptic number.

It is an amenable number.

50217712021 is a deficient number, since it is larger than the sum of its proper divisors (451479).

50217712021 is a wasteful number, since it uses less digits than its factorization.

50217712021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451478.

The product of its (nonzero) digits is 1960, while the sum is 28.

The spelling of 50217712021 in words is "fifty billion, two hundred seventeen million, seven hundred twelve thousand, twenty-one".