50135551 has 2 divisors, whose sum is σ = 50135552. Its totient is φ = 50135550.

The previous prime is 50135543. The next prime is 50135557. The reversal of 50135551 is 15553105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50135551 - 2³ = 50135543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50135557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25067775 + 25067776.

It is an arithmetic number, because the mean of its divisors is an integer number (25067776).

Almost surely, 2^50135551 is an apocalyptic number.

50135551 is a deficient number, since it is larger than the sum of its proper divisors (1).

50135551 is an equidigital number, since it uses as much as digits as its factorization.

50135551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 50135551 is about 7080.6462275699. The cubic root of 50135551 is about 368.7357655714.

Adding to 50135551 its reverse (15553105), we get a palindrome (65688656).

The spelling of 50135551 in words is "fifty million, one hundred thirty-five thousand, five hundred fifty-one".