50871017 has 4 divisors (see below), whose sum is σ = 52625220. Its totient is φ = 49116816.

The previous prime is 50871013. The next prime is 50871049. The reversal of 50871017 is 71017805.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42133081 + 8737936 = 6491^2 + 2956^2 .

It is a cyclic number.

It is not a de Polignac number, because 50871017 - 2² = 50871013 is a prime.

It is a super-2 number, since 2×50871017² = 5175720741228578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1754173 = 50871017 / (5 + 0 + 8 + 7 + 1 + 0 + 1 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50871013) 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, 877058 + ... + 877115.

It is an arithmetic number, because the mean of its divisors is an integer number (13156305).

Almost surely, 2^50871017 is an apocalyptic number.

It is an amenable number.

50871017 is a deficient number, since it is larger than the sum of its proper divisors (1754203).

50871017 is a wasteful number, since it uses less digits than its factorization.

50871017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754202.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 50871017 is about 7132.3920952230. The cubic root of 50871017 is about 370.5300826754.

The spelling of 50871017 in words is "fifty million, eight hundred seventy-one thousand, seventeen".