50809111 has 2 divisors, whose sum is σ = 50809112. Its totient is φ = 50809110.

The previous prime is 50809079. The next prime is 50809117. The reversal of 50809111 is 11190805.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50809111 - 2⁵ = 50809079 is a prime.

It is a super-2 number, since 2×50809111² = 5163131521220642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50809117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25404555 + 25404556.

It is an arithmetic number, because the mean of its divisors is an integer number (25404556).

Almost surely, 2^50809111 is an apocalyptic number.

50809111 is a deficient number, since it is larger than the sum of its proper divisors (1).

50809111 is an equidigital number, since it uses as much as digits as its factorization.

50809111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 50809111 is about 7128.0509958894. The cubic root of 50809111 is about 370.3797197409.

Adding to 50809111 its reverse (11190805), we get a palindrome (61999916).

The spelling of 50809111 in words is "fifty million, eight hundred nine thousand, one hundred eleven".