50022420251 has 4 divisors (see below), whose sum is σ = 52197308112. Its totient is φ = 47847532392.

The previous prime is 50022420193. The next prime is 50022420281. The reversal of 50022420251 is 15202422005.

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

It is a cyclic number.

It is not a de Polignac number, because 50022420251 - 2¹⁴ = 50022403867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 2174887837 = 50022420251 / (5 + 0 + 0 + 2 + 2 + 4 + 2 + 0 + 2 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50022420281) 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, 1087443896 + ... + 1087443941.

It is an arithmetic number, because the mean of its divisors is an integer number (13049327028).

Almost surely, 2^50022420251 is an apocalyptic number.

50022420251 is a deficient number, since it is larger than the sum of its proper divisors (2174887861).

50022420251 is a wasteful number, since it uses less digits than its factorization.

50022420251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174887860.

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 50022420251 its reverse (15202422005), we get a palindrome (65224842256).

The spelling of 50022420251 in words is "fifty billion, twenty-two million, four hundred twenty thousand, two hundred fifty-one".