50504991 has 4 divisors (see below), whose sum is σ = 67339992. Its totient is φ = 33669992.

The previous prime is 50504981. The next prime is 50504999. The reversal of 50504991 is 19940505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50504991 - 2⁵ = 50504959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50504999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8417496 + ... + 8417501.

It is an arithmetic number, because the mean of its divisors is an integer number (16834998).

Almost surely, 2^50504991 is an apocalyptic number.

50504991 is a deficient number, since it is larger than the sum of its proper divisors (16835001).

50504991 is a wasteful number, since it uses less digits than its factorization.

50504991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835000.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 50504991 is about 7106.6863586344. The cubic root of 50504991 is about 369.6392661404.

The spelling of 50504991 in words is "fifty million, five hundred four thousand, nine hundred ninety-one".