50420765 has 4 divisors (see below), whose sum is σ = 60504924. Its totient is φ = 40336608.

The previous prime is 50420743. The next prime is 50420789. The reversal of 50420765 is 56702405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56702405 = 5 ⋅11340481.

It can be written as a sum of positive squares in 2 ways, for example, as 17081689 + 33339076 = 4133^2 + 5774^2 .

It is a cyclic number.

It is not a de Polignac number, because 50420765 - 2⁶ = 50420701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5042072 + ... + 5042081.

It is an arithmetic number, because the mean of its divisors is an integer number (15126231).

Almost surely, 2^50420765 is an apocalyptic number.

It is an amenable number.

50420765 is a deficient number, since it is larger than the sum of its proper divisors (10084159).

50420765 is a wasteful number, since it uses less digits than its factorization.

50420765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084158.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 50420765 is about 7100.7580581231. The cubic root of 50420765 is about 369.4336722047.

The spelling of 50420765 in words is "fifty million, four hundred twenty thousand, seven hundred sixty-five".