50378288281 has 2 divisors, whose sum is σ = 50378288282. Its totient is φ = 50378288280.

The previous prime is 50378288249. The next prime is 50378288339. The reversal of 50378288281 is 18288287305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30157448281 + 20220840000 = 173659^2 + 142200^2 .

It is a cyclic number.

It is not a de Polignac number, because 50378288281 - 2⁵ = 50378288249 is a prime.

It is a super-2 number, since 2×50378288281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50378288581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25189144140 + 25189144141.

It is an arithmetic number, because the mean of its divisors is an integer number (25189144141).

Almost surely, 2^50378288281 is an apocalyptic number.

It is an amenable number.

50378288281 is a deficient number, since it is larger than the sum of its proper divisors (1).

50378288281 is an equidigital number, since it uses as much as digits as its factorization.

50378288281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 50378288281 in words is "fifty billion, three hundred seventy-eight million, two hundred eighty-eight thousand, two hundred eighty-one".