50787913 has 4 divisors (see below), whose sum is σ = 55405008. Its totient is φ = 46170820.

The previous prime is 50787883. The next prime is 50787917. The reversal of 50787913 is 31978705.

50787913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50787913 - 2¹⁷ = 50656841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50787917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2308531 + ... + 2308552.

It is an arithmetic number, because the mean of its divisors is an integer number (13851252).

Almost surely, 2^50787913 is an apocalyptic number.

It is an amenable number.

50787913 is a deficient number, since it is larger than the sum of its proper divisors (4617095).

50787913 is a wasteful number, since it uses less digits than its factorization.

50787913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617094.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 50787913 is about 7126.5638985418. The cubic root of 50787913 is about 370.3282040365.

The spelling of 50787913 in words is "fifty million, seven hundred eighty-seven thousand, nine hundred thirteen".