50819815 has 4 divisors (see below), whose sum is σ = 60983784. Its totient is φ = 40655848.

The previous prime is 50819809. The next prime is 50819843. The reversal of 50819815 is 51891805.

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 50819815 - 2⁹ = 50819303 is a prime.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5081977 + ... + 5081986.

It is an arithmetic number, because the mean of its divisors is an integer number (15245946).

Almost surely, 2^50819815 is an apocalyptic number.

50819815 is a deficient number, since it is larger than the sum of its proper divisors (10163969).

50819815 is a wasteful number, since it uses less digits than its factorization.

50819815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10163968.

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 50819815 is about 7128.8017927279. The cubic root of 50819815 is about 370.4057273215.

The spelling of 50819815 in words is "fifty million, eight hundred nineteen thousand, eight hundred fifteen".