50278083281 has 4 divisors (see below), whose sum is σ = 50322617700. Its totient is φ = 50233548864.

The previous prime is 50278083269. The next prime is 50278083301. The reversal of 50278083281 is 18238087205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10244476225 + 40033607056 = 101215^2 + 200084^2 .

It is a cyclic number.

It is not a de Polignac number, because 50278083281 - 2⁶ = 50278083217 is a prime.

It is a super-2 number, since 2×50278083281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50278083221) 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, 22265516 + ... + 22267773.

It is an arithmetic number, because the mean of its divisors is an integer number (12580654425).

Almost surely, 2^50278083281 is an apocalyptic number.

It is an amenable number.

50278083281 is a deficient number, since it is larger than the sum of its proper divisors (44534419).

50278083281 is a wasteful number, since it uses less digits than its factorization.

50278083281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44534418.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 50278083281 in words is "fifty billion, two hundred seventy-eight million, eighty-three thousand, two hundred eighty-one".