50289372421 has 2 divisors, whose sum is σ = 50289372422. Its totient is φ = 50289372420.

The previous prime is 50289372403. The next prime is 50289372457. The reversal of 50289372421 is 12427398205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45107388225 + 5181984196 = 212385^2 + 71986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50289372421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50289372821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25144686210 + 25144686211.

It is an arithmetic number, because the mean of its divisors is an integer number (25144686211).

Almost surely, 2^50289372421 is an apocalyptic number.

It is an amenable number.

50289372421 is a deficient number, since it is larger than the sum of its proper divisors (1).

50289372421 is an equidigital number, since it uses as much as digits as its factorization.

50289372421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 50289372421 in words is "fifty billion, two hundred eighty-nine million, three hundred seventy-two thousand, four hundred twenty-one".