50225944781 has 4 divisors (see below), whose sum is σ = 51294581952. Its totient is φ = 49157307612.

The previous prime is 50225944733. The next prime is 50225944843. The reversal of 50225944781 is 18744952205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50225944781 is a prime.

It is a super-2 number, since 2×50225944781² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1068637123 = 50225944781 / (5 + 0 + 2 + 2 + 5 + 9 + 4 + 4 + 7 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50225944711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534318515 + ... + 534318608.

It is an arithmetic number, because the mean of its divisors is an integer number (12823645488).

Almost surely, 2^50225944781 is an apocalyptic number.

It is an amenable number.

50225944781 is a deficient number, since it is larger than the sum of its proper divisors (1068637171).

50225944781 is a wasteful number, since it uses less digits than its factorization.

50225944781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068637170.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 50225944781 in words is "fifty billion, two hundred twenty-five million, nine hundred forty-four thousand, seven hundred eighty-one".