50515145 has 4 divisors (see below), whose sum is σ = 60618180. Its totient is φ = 40412112.

The previous prime is 50515133. The next prime is 50515163. The reversal of 50515145 is 54151505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54151505 = 5 ⋅10830301.

It can be written as a sum of positive squares in 2 ways, for example, as 32307856 + 18207289 = 5684^2 + 4267^2 .

It is a cyclic number.

It is not a de Polignac number, because 50515145 - 2⁶ = 50515081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5051510 + ... + 5051519.

It is an arithmetic number, because the mean of its divisors is an integer number (15154545).

Almost surely, 2^50515145 is an apocalyptic number.

It is an amenable number.

50515145 is a deficient number, since it is larger than the sum of its proper divisors (10103035).

50515145 is a wasteful number, since it uses less digits than its factorization.

50515145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103034.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 50515145 is about 7107.4007203759. The cubic root of 50515145 is about 369.6640364025.

The spelling of 50515145 in words is "fifty million, five hundred fifteen thousand, one hundred forty-five".