It is a happy number.
5151515 is nontrivially palindromic in base 10.
5151515 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a nude number because it is divisible by every one of its digits.
5151515 is an undulating number in base 10.
It is an unprimeable number.
Almost surely, 25151515 is an apocalyptic number.
5151515 is a wasteful number, since it uses less digits than its factorization.
5151515 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9741.
The square root of 5151515 is about 2269.6949134190. The cubic root of 5151515 is about 172.7076823665.
The spelling of 5151515 in words is "five million, one hundred fifty-one thousand, five hundred fifteen".