50432513 has 4 divisors (see below), whose sum is σ = 50481108. Its totient is φ = 50383920.

The previous prime is 50432509. The next prime is 50432519. The reversal of 50432513 is 31523405.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45265984 + 5166529 = 6728^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 50432513 - 2² = 50432509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50432519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22706 + ... + 24827.

It is an arithmetic number, because the mean of its divisors is an integer number (12620277).

Almost surely, 2^50432513 is an apocalyptic number.

It is an amenable number.

50432513 is a deficient number, since it is larger than the sum of its proper divisors (48595).

50432513 is a wasteful number, since it uses less digits than its factorization.

50432513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48594.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 50432513 is about 7101.5852455631. The cubic root of 50432513 is about 369.4623625650.

Adding to 50432513 its reverse (31523405), we get a palindrome (81955918).

The spelling of 50432513 in words is "fifty million, four hundred thirty-two thousand, five hundred thirteen".