51189 has 8 divisors (see below), whose sum is σ = 69312. Its totient is φ = 33600.

The previous prime is 51169. The next prime is 51193. The reversal of 51189 is 98115.

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

It is not a de Polignac number, because 51189 - 2⁵ = 51157 is a prime.

51189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264 + ... + 414.

It is an arithmetic number, because the mean of its divisors is an integer number (8664).

2⁵¹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

51189 is a deficient number, since it is larger than the sum of its proper divisors (18123).

51189 is a wasteful number, since it uses less digits than its factorization.

51189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267.

The product of its digits is 360, while the sum is 24.

The square root of 51189 is about 226.2498618784. The cubic root of 51189 is about 37.1300512348.

The spelling of 51189 in words is "fifty-one thousand, one hundred eighty-nine".