50513907 has 4 divisors (see below), whose sum is σ = 67351880. Its totient is φ = 33675936.

The previous prime is 50513891. The next prime is 50513921. The reversal of 50513907 is 70931505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 50513907 - 2⁴ = 50513891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50518907) 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, 8418982 + ... + 8418987.

It is an arithmetic number, because the mean of its divisors is an integer number (16837970).

Almost surely, 2^50513907 is an apocalyptic number.

50513907 is a deficient number, since it is larger than the sum of its proper divisors (16837973).

50513907 is a wasteful number, since it uses less digits than its factorization.

50513907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16837972.

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 50513907 is about 7107.3136275248. The cubic root of 50513907 is about 369.6610165305.

The spelling of 50513907 in words is "fifty million, five hundred thirteen thousand, nine hundred seven".