50809919 has 4 divisors (see below), whose sum is σ = 51568344. Its totient is φ = 50051496.

The previous prime is 50809909. The next prime is 50809937. The reversal of 50809919 is 91990805.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91990805 = 5 ⋅18398161.

It is a cyclic number.

It is not a de Polignac number, because 50809919 - 2⁴ = 50809903 is a prime.

It is a super-2 number, since 2×50809919² = 5163295737573122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50809909) 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, 379112 + ... + 379245.

It is an arithmetic number, because the mean of its divisors is an integer number (12892086).

Almost surely, 2^50809919 is an apocalyptic number.

50809919 is a deficient number, since it is larger than the sum of its proper divisors (758425).

50809919 is an equidigital number, since it uses as much as digits as its factorization.

50809919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758424.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 50809919 is about 7128.1076731486. The cubic root of 50809919 is about 370.3816830714.

The spelling of 50809919 in words is "fifty million, eight hundred nine thousand, nine hundred nineteen".