50239187881 has 27 divisors (see below), whose sum is σ = 53335260823. Its totient is φ = 47320647920.

The previous prime is 50239187861. The next prime is 50239187917. The reversal of 50239187881 is 18878193205.

It is a happy number.

The square root of 50239187881 is 224141.

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., 26344211481 + 23894976400 = 162309^2 + 154580^2 .

It is not a de Polignac number, because 50239187881 - 2¹¹ = 50239185833 is a prime.

It is a super-2 number, since 2×50239187881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50239187821) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 383505186 + ... + 383505316.

Almost surely, 2^50239187881 is an apocalyptic number.

50239187881 is the 224141-st square number.

50239187881 is the 112071-st centered octagonal number.

It is an amenable number.

50239187881 is a deficient number, since it is larger than the sum of its proper divisors (3096072942).

50239187881 is an frugal number, since it uses more digits than its factorization.

50239187881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 50239187881 in words is "fifty billion, two hundred thirty-nine million, one hundred eighty-seven thousand, eight hundred eighty-one".