50558129 has 2 divisors, whose sum is σ = 50558130. Its totient is φ = 50558128.

The previous prime is 50558111. The next prime is 50558159. The reversal of 50558129 is 92185505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47128225 + 3429904 = 6865^2 + 1852^2 .

It is a cyclic number.

It is not a de Polignac number, because 50558129 - 2¹⁶ = 50492593 is a prime.

It is a super-2 number, since 2×50558129² = 5112248815961282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (50558159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25279064 + 25279065.

It is an arithmetic number, because the mean of its divisors is an integer number (25279065).

Almost surely, 2^50558129 is an apocalyptic number.

It is an amenable number.

50558129 is a deficient number, since it is larger than the sum of its proper divisors (1).

50558129 is an equidigital number, since it uses as much as digits as its factorization.

50558129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 50558129 is about 7110.4239676689. The cubic root of 50558129 is about 369.7688573374.

The spelling of 50558129 in words is "fifty million, five hundred fifty-eight thousand, one hundred twenty-nine".