50117857 has 4 divisors (see below), whose sum is σ = 50191920. Its totient is φ = 50043796.

The previous prime is 50117803. The next prime is 50117861. The reversal of 50117857 is 75871105.

50117857 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50117857 - 2¹⁹ = 49593569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50117257) 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, 36007 + ... + 37372.

It is an arithmetic number, because the mean of its divisors is an integer number (12547980).

Almost surely, 2^50117857 is an apocalyptic number.

It is an amenable number.

50117857 is a deficient number, since it is larger than the sum of its proper divisors (74063).

50117857 is an equidigital number, since it uses as much as digits as its factorization.

50117857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74062.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 50117857 is about 7079.3966550830. The cubic root of 50117857 is about 368.6923819963.

The spelling of 50117857 in words is "fifty million, one hundred seventeen thousand, eight hundred fifty-seven".