50421181 has 2 divisors, whose sum is σ = 50421182. Its totient is φ = 50421180.

The previous prime is 50421157. The next prime is 50421187. The reversal of 50421181 is 18112405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41718681 + 8702500 = 6459^2 + 2950^2 .

It is a cyclic number.

It is not a de Polignac number, because 50421181 - 2⁵ = 50421149 is a prime.

It is a super-2 number, since 2×50421181² = 5084590986869522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50421187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25210590 + 25210591.

It is an arithmetic number, because the mean of its divisors is an integer number (25210591).

Almost surely, 2^50421181 is an apocalyptic number.

It is an amenable number.

50421181 is a deficient number, since it is larger than the sum of its proper divisors (1).

50421181 is an equidigital number, since it uses as much as digits as its factorization.

50421181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 50421181 is about 7100.7873507098. The cubic root of 50421181 is about 369.4346882146.

Adding to 50421181 its reverse (18112405), we get a palindrome (68533586).

The spelling of 50421181 in words is "fifty million, four hundred twenty-one thousand, one hundred eighty-one".