50668181 has 2 divisors, whose sum is σ = 50668182. Its totient is φ = 50668180.

The previous prime is 50668157. The next prime is 50668187. The reversal of 50668181 is 18186605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 23367556 = 5225^2 + 4834^2 .

It is a cyclic number.

It is not a de Polignac number, because 50668181 - 2²² = 46473877 is a prime.

It is a super-2 number, since 2×50668181² = 5134529131697522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50668187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25334090 + 25334091.

It is an arithmetic number, because the mean of its divisors is an integer number (25334091).

Almost surely, 2^50668181 is an apocalyptic number.

It is an amenable number.

50668181 is a deficient number, since it is larger than the sum of its proper divisors (1).

50668181 is an equidigital number, since it uses as much as digits as its factorization.

50668181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 50668181 is about 7118.1585399596. The cubic root of 50668181 is about 370.0369600283.

The spelling of 50668181 in words is "fifty million, six hundred sixty-eight thousand, one hundred eighty-one".