50400013 has 8 divisors (see below), whose sum is σ = 51368832. Its totient is φ = 49437696.

The previous prime is 50400001. The next prime is 50400037. The reversal of 50400013 is 31000405.

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 50400013 - 2⁵ = 50399981 is a prime.

It is a super-2 number, since 2×50400013² = 5080322620800338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50399966 and 50400002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50400073) 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, 15756 + ... + 18682.

It is an arithmetic number, because the mean of its divisors is an integer number (6421104).

Almost surely, 2^50400013 is an apocalyptic number.

It is an amenable number.

50400013 is a deficient number, since it is larger than the sum of its proper divisors (968819).

50400013 is a wasteful number, since it uses less digits than its factorization.

50400013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 50400013 is about 7099.2966553033. The cubic root of 50400013 is about 369.3829818487.

Adding to 50400013 its reverse (31000405), we get a palindrome (81400418).

The spelling of 50400013 in words is "fifty million, four hundred thousand, thirteen".