50750013 has 4 divisors (see below), whose sum is σ = 67666688. Its totient is φ = 33833340.

The previous prime is 50750009. The next prime is 50750023. The reversal of 50750013 is 31005705.

It is a happy number.

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 not a de Polignac number, because 50750013 - 2² = 50750009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50750023) 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, 8458333 + ... + 8458338.

It is an arithmetic number, because the mean of its divisors is an integer number (16916672).

Almost surely, 2^50750013 is an apocalyptic number.

It is an amenable number.

50750013 is a deficient number, since it is larger than the sum of its proper divisors (16916675).

50750013 is a wasteful number, since it uses less digits than its factorization.

50750013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16916674.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 50750013 is about 7123.9043368086. The cubic root of 50750013 is about 370.2360631390.

Adding to 50750013 its reverse (31005705), we get a palindrome (81755718).

The spelling of 50750013 in words is "fifty million, seven hundred fifty thousand, thirteen".