50505091 has 16 divisors (see below), whose sum is σ = 63610624. Its totient is φ = 39027744.

The previous prime is 50505089. The next prime is 50505109. The reversal of 50505091 is 19050505.

It is not a de Polignac number, because 50505091 - 2¹ = 50505089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50505991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541 + ... + 10366.

It is an arithmetic number, because the mean of its divisors is an integer number (3975664).

Almost surely, 2^50505091 is an apocalyptic number.

50505091 is a deficient number, since it is larger than the sum of its proper divisors (13105533).

50505091 is a wasteful number, since it uses less digits than its factorization.

50505091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 50505091 is about 7106.6933942587. The cubic root of 50505091 is about 369.6395101024.

Adding to 50505091 its reverse (19050505), we get a palindrome (69555596).

The spelling of 50505091 in words is "fifty million, five hundred five thousand, ninety-one".