50479991 has 4 divisors (see below), whose sum is σ = 50970192. Its totient is φ = 49989792.

The previous prime is 50479939. The next prime is 50479993. The reversal of 50479991 is 19997405.

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 50479991 - 2¹⁴ = 50463607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50479993) 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, 244946 + ... + 245151.

It is an arithmetic number, because the mean of its divisors is an integer number (12742548).

Almost surely, 2^50479991 is an apocalyptic number.

50479991 is a deficient number, since it is larger than the sum of its proper divisors (490201).

50479991 is a wasteful number, since it uses less digits than its factorization.

50479991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490200.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 50479991 is about 7104.9272339694. The cubic root of 50479991 is about 369.5782655234.

The spelling of 50479991 in words is "fifty million, four hundred seventy-nine thousand, nine hundred ninety-one".