50565181 has 2 divisors, whose sum is σ = 50565182. Its totient is φ = 50565180.

The previous prime is 50565143. The next prime is 50565197. The reversal of 50565181 is 18156505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 933156 = 7045^2 + 966^2 .

It is a cyclic number.

It is not a de Polignac number, because 50565181 - 2¹¹ = 50563133 is a prime.

It is a super-2 number, since 2×50565181² = 5113675059125522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50565121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25282590 + 25282591.

It is an arithmetic number, because the mean of its divisors is an integer number (25282591).

Almost surely, 2^50565181 is an apocalyptic number.

It is an amenable number.

50565181 is a deficient number, since it is larger than the sum of its proper divisors (1).

50565181 is an equidigital number, since it uses as much as digits as its factorization.

50565181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 50565181 is about 7110.9198420458. The cubic root of 50565181 is about 369.7860486958.

The spelling of 50565181 in words is "fifty million, five hundred sixty-five thousand, one hundred eighty-one".