50440013 has 8 divisors (see below), whose sum is σ = 54975648. Its totient is φ = 45998064.

The previous prime is 50440009. The next prime is 50440031. The reversal of 50440013 is 31004405.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50440013 - 2² = 50440009 is a prime.

It is a super-2 number, since 2×50440013² = 5088389822880338, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50439973 and 50440000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50440043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22295 + ... + 24452.

It is an arithmetic number, because the mean of its divisors is an integer number (6871956).

Almost surely, 2^50440013 is an apocalyptic number.

It is an amenable number.

50440013 is a deficient number, since it is larger than the sum of its proper divisors (4535635).

50440013 is a wasteful number, since it uses less digits than its factorization.

50440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46843.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 50440013 is about 7102.1132770465. The cubic root of 50440013 is about 369.4806763485.

Adding to 50440013 its reverse (31004405), we get a palindrome (81444418).

The spelling of 50440013 in words is "fifty million, four hundred forty thousand, thirteen".