50819687 has 4 divisors (see below), whose sum is σ = 52572120. Its totient is φ = 49067256.

The previous prime is 50819683. The next prime is 50819689. The reversal of 50819687 is 78691805.

It is a happy number.

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 50819687 - 2² = 50819683 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 (50819683) 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, 876173 + ... + 876230.

It is an arithmetic number, because the mean of its divisors is an integer number (13143030).

Almost surely, 2^50819687 is an apocalyptic number.

50819687 is a deficient number, since it is larger than the sum of its proper divisors (1752433).

50819687 is a wasteful number, since it uses less digits than its factorization.

50819687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752432.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 50819687 is about 7128.7928150564. The cubic root of 50819687 is about 370.4054163406.

The spelling of 50819687 in words is "fifty million, eight hundred nineteen thousand, six hundred eighty-seven".