50251 has 4 divisors (see below), whose sum is σ = 51904. Its totient is φ = 48600.

The previous prime is 50231. The next prime is 50261. The reversal of 50251 is 15205.

50251 = 89² + 90² + ... + 94².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15205 = 5 ⋅3041.

It is a 5-Lehmer number, since φ(50251) divides (50251-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 50251 - 2⁷ = 50123 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780 + ... + 841.

It is an arithmetic number, because the mean of its divisors is an integer number (12976).

2⁵⁰²⁵¹ is an apocalyptic number.

50251 is a deficient number, since it is larger than the sum of its proper divisors (1653).

50251 is a wasteful number, since it uses less digits than its factorization.

50251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 50251 is about 224.1673482022. The cubic root of 50251 is about 36.9018582457.

Adding to 50251 its reverse (15205), we get a palindrome (65456).

The spelling of 50251 in words is "fifty thousand, two hundred fifty-one".