50867840521 has 9 divisors (see below), whose sum is σ = 54040152999. Its totient is φ = 47872005984.

The previous prime is 50867840501. The next prime is 50867840531. The reversal of 50867840521 is 12504876805.

The square root of 50867840521 is 225539.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 39602990025 + 11264850496 = 199005^2 + 106136^2 .

It is not a de Polignac number, because 50867840521 - 2⁵ = 50867840489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50867840501) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3827530 + ... + 3840796.

Almost surely, 2^50867840521 is an apocalyptic number.

50867840521 is the 225539-th square number.

50867840521 is the 112770-th centered octagonal number.

It is an amenable number.

50867840521 is a deficient number, since it is larger than the sum of its proper divisors (3172312478).

50867840521 is an frugal number, since it uses more digits than its factorization.

50867840521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26568 (or 13284 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 50867840521 in words is "fifty billion, eight hundred sixty-seven million, eight hundred forty thousand, five hundred twenty-one".