1315513 has 4 divisors (see below), whose sum is σ = 1340388. Its totient is φ = 1290640.

The previous prime is 1315507. The next prime is 1315519. The reversal of 1315513 is 3155131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1315507) and next prime (1315519).

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 779689 = 732^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315513 - 2⁵ = 1315481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315519) 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, 12358 + ... + 12463.

It is an arithmetic number, because the mean of its divisors is an integer number (335097).

2^1315513 is an apocalyptic number.

It is an amenable number.

1315513 is a deficient number, since it is larger than the sum of its proper divisors (24875).

1315513 is an equidigital number, since it uses as much as digits as its factorization.

1315513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24874.

The product of its digits is 225, while the sum is 19.

The square root of 1315513 is about 1146.9581509366. The cubic root of 1315513 is about 109.5716953655.

The spelling of 1315513 in words is "one million, three hundred fifteen thousand, five hundred thirteen".