50381861 has 2 divisors, whose sum is σ = 50381862. Its totient is φ = 50381860.

The previous prime is 50381839. The next prime is 50381867. The reversal of 50381861 is 16818305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46321636 + 4060225 = 6806^2 + 2015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50381861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50381867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25190930 + 25190931.

It is an arithmetic number, because the mean of its divisors is an integer number (25190931).

Almost surely, 2^50381861 is an apocalyptic number.

It is an amenable number.

50381861 is a deficient number, since it is larger than the sum of its proper divisors (1).

50381861 is an equidigital number, since it uses as much as digits as its factorization.

50381861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 50381861 is about 7098.0181036681. The cubic root of 50381861 is about 369.3386310334.

The spelling of 50381861 in words is "fifty million, three hundred eighty-one thousand, eight hundred sixty-one".