51895 has 8 divisors (see below), whose sum is σ = 63504. Its totient is φ = 40704.

The previous prime is 51893. The next prime is 51899. The reversal of 51895 is 59815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51895 - 2¹ = 51893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (7938).

2⁵¹⁸⁹⁵ is an apocalyptic number.

51895 is a deficient number, since it is larger than the sum of its proper divisors (11609).

51895 is a wasteful number, since it uses less digits than its factorization.

51895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209.

The product of its digits is 1800, while the sum is 28.

The square root of 51895 is about 227.8047409515. The cubic root of 51895 is about 37.2999719684.

It can be divided in two parts, 51 and 895, that added together give a triangular number (946 = T₄₃).

The spelling of 51895 in words is "fifty-one thousand, eight hundred ninety-five".