50205145 has 4 divisors (see below), whose sum is σ = 60246180. Its totient is φ = 40164112.

The previous prime is 50205137. The next prime is 50205161. The reversal of 50205145 is 54150205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54150205 = 5 ⋅10830041.

It can be written as a sum of positive squares in 2 ways, for example, as 25969216 + 24235929 = 5096^2 + 4923^2 .

It is a cyclic number.

It is not a de Polignac number, because 50205145 - 2³ = 50205137 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5020510 + ... + 5020519.

It is an arithmetic number, because the mean of its divisors is an integer number (15061545).

Almost surely, 2^50205145 is an apocalyptic number.

It is an amenable number.

50205145 is a deficient number, since it is larger than the sum of its proper divisors (10041035).

50205145 is a wasteful number, since it uses less digits than its factorization.

50205145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041034.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 50205145 is about 7085.5589052664. The cubic root of 50205145 is about 368.9063027893.

The spelling of 50205145 in words is "fifty million, two hundred five thousand, one hundred forty-five".