50542181 has 2 divisors, whose sum is σ = 50542182. Its totient is φ = 50542180.

The previous prime is 50542171. The next prime is 50542237. The reversal of 50542181 is 18124505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49126081 + 1416100 = 7009^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 50542181 - 2¹⁰ = 50541157 is a prime.

It is a super-2 number, since 2×50542181² = 5109024120473522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50542181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50542171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25271090 + 25271091.

It is an arithmetic number, because the mean of its divisors is an integer number (25271091).

Almost surely, 2^50542181 is an apocalyptic number.

It is an amenable number.

50542181 is a deficient number, since it is larger than the sum of its proper divisors (1).

50542181 is an equidigital number, since it uses as much as digits as its factorization.

50542181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 50542181 is about 7109.3024271021. The cubic root of 50542181 is about 369.7299734228.

Adding to 50542181 its reverse (18124505), we get a palindrome (68666686).

The spelling of 50542181 in words is "fifty million, five hundred forty-two thousand, one hundred eighty-one".