1115513515 has 16 divisors (see below), whose sum is σ = 1349081856. Its totient is φ = 885456000.

The previous prime is 1115513489. The next prime is 1115513543. The reversal of 1115513515 is 5153155111.

1115513515 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1115513515 - 2²⁷ = 981295787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570790 + ... + 572740.

It is an arithmetic number, because the mean of its divisors is an integer number (84317616).

Almost surely, 2^1115513515 is an apocalyptic number.

1115513515 is a deficient number, since it is larger than the sum of its proper divisors (233568341).

1115513515 is a wasteful number, since it uses less digits than its factorization.

1115513515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790.

The product of its digits is 1875, while the sum is 28.

The square root of 1115513515 is about 33399.3041095170. The cubic root of 1115513515 is about 1037.1102952113.

Adding to 1115513515 its reverse (5153155111), we get a palindrome (6268668626).

The spelling of 1115513515 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, five hundred fifteen".