50515117 has 4 divisors (see below), whose sum is σ = 50529436. Its totient is φ = 50500800.

The previous prime is 50515097. The next prime is 50515121. The reversal of 50515117 is 71151505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 71151505 = 5 ⋅14230301.

It can be written as a sum of positive squares in 2 ways, for example, as 30184036 + 20331081 = 5494^2 + 4509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50515117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50515091 and 50515100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50515417) 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, 2293 + ... + 10309.

It is an arithmetic number, because the mean of its divisors is an integer number (12632359).

Almost surely, 2^50515117 is an apocalyptic number.

It is an amenable number.

50515117 is a deficient number, since it is larger than the sum of its proper divisors (14319).

50515117 is an equidigital number, since it uses as much as digits as its factorization.

50515117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14318.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 50515117 is about 7107.3987505979. The cubic root of 50515117 is about 369.6639681022.

The spelling of 50515117 in words is "fifty million, five hundred fifteen thousand, one hundred seventeen".