5145 has 16 divisors (see below), whose sum is σ = 9600.
Its totient is φ = 2352.
The previous prime is 5119. The next prime is 5147. The reversal of 5145 is 5415.
5145 divided by its sum of digits (15) gives a palindrome (343).
5145 = 182 + 192 + ... + 272.
5145 is nontrivially palindromic in base 6.
It is not a de Polignac number, because 5145 - 25 = 5113 is a prime.
It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a plaindrome in base 13.
It is a nialpdrome in base 7.
It is not an unprimeable number, because it can be changed into a prime (5147) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732 + ... + 738.
It is an arithmetic number, because the mean of its divisors is an integer number (600).
25145 is an apocalyptic number.
It is an amenable number.
5145 is a deficient number, since it is larger than the sum of its proper divisors (4455).
5145 is an equidigital number, since it uses as much as digits as its factorization.
5145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 29 (or 15 counting only the distinct ones).
The product of its digits is 100, while the sum is 15.
The square root of 5145 is about 71.7286553617.
The cubic root of 5145 is about 17.2634845203.
The spelling of 5145 in words is "five thousand, one hundred forty-five".