51117 has 8 divisors (see below), whose sum is σ = 74400.
Its totient is φ = 30960.
The previous prime is 51109. The next prime is 51131. The reversal of 51117 is 71115.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 51117 - 23 = 51109 is a prime.
It is a super-2 number, since 2×511172 = 5225895378, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 51096 and 51105.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (51137) 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, 742 + ... + 807.
It is an arithmetic number, because the mean of its divisors is an integer number (9300).
251117 is an apocalyptic number.
It is an amenable number.
51117 is a deficient number, since it is larger than the sum of its proper divisors (23283).
51117 is a wasteful number, since it uses less digits than its factorization.
51117 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1563.
The product of its digits is 35, while the sum is 15.
The square root of 51117 is about 226.0906897685.
The cubic root of 51117 is about 37.1126346149.
It can be divided in two parts, 511 and 17, that added together give a triangular number (528 = T32).
The spelling of 51117 in words is "fifty-one thousand, one hundred seventeen".