1316515 has 4 divisors (see below), whose sum is σ = 1579824. Its totient is φ = 1053208.

The previous prime is 1316509. The next prime is 1316519. The reversal of 1316515 is 5156131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5156131 = 887 ⋅5813.

It is a cyclic number.

It is not a de Polignac number, because 1316515 - 2³ = 1316507 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1316515 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1316519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131647 + ... + 131656.

It is an arithmetic number, because the mean of its divisors is an integer number (394956).

2^1316515 is an apocalyptic number.

1316515 is a deficient number, since it is larger than the sum of its proper divisors (263309).

1316515 is an equidigital number, since it uses as much as digits as its factorization.

1316515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263308.

The product of its digits is 450, while the sum is 22.

The square root of 1316515 is about 1147.3948753590. The cubic root of 1316515 is about 109.5995078299.

The spelling of 1316515 in words is "one million, three hundred sixteen thousand, five hundred fifteen".