51841 has 4 divisors (see below), whose sum is σ = 52992. Its totient is φ = 50692.

The previous prime is 51839. The next prime is 51853. The reversal of 51841 is 14815.

Subtracting from 51841 its product of digits (160), we obtain a triangular number (51681 = T_{321}).

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, and also an emirpimes, since its reverse is a distinct semiprime: 14815 = 5 ⋅2963.

It is a cyclic number.

It is not a de Polignac number, because 51841 - 2^{1} = 51839 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (51871) 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, 505 + ... + 598.

It is an arithmetic number, because the mean of its divisors is an integer number (13248).

2^{51841} is an apocalyptic number.

It is an amenable number.

51841 is a deficient number, since it is larger than the sum of its proper divisors (1151).

51841 is a wasteful number, since it uses less digits than its factorization.

51841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150.

The product of its digits is 160, while the sum is 19.

The square root of 51841 is about 227.6861875477. The cubic root of 51841 is about 37.2870298255.

The spelling of 51841 in words is "fifty-one thousand, eight hundred forty-one".

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