50799991 has 4 divisors (see below), whose sum is σ = 55418184. Its totient is φ = 46181800.

The previous prime is 50799953. The next prime is 50800037. The reversal of 50799991 is 19999705.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50799991 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 (50799691) 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, 2309080 + ... + 2309101.

It is an arithmetic number, because the mean of its divisors is an integer number (13854546).

Almost surely, 2^50799991 is an apocalyptic number.

50799991 is a deficient number, since it is larger than the sum of its proper divisors (4618193).

50799991 is a wasteful number, since it uses less digits than its factorization.

50799991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618192.

The product of its (nonzero) digits is 229635, while the sum is 49.

The square root of 50799991 is about 7127.4112411169. The cubic root of 50799991 is about 370.3575579337.

The spelling of 50799991 in words is "fifty million, seven hundred ninety-nine thousand, nine hundred ninety-one".