1115513051 has 8 divisors (see below), whose sum is σ = 1121085504. Its totient is φ = 1109953800.

The previous prime is 1115513033. The next prime is 1115513057. The reversal of 1115513051 is 1503155111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115513051 - 2²⁶ = 1048404187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115513057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194576 + ... + 200226.

It is an arithmetic number, because the mean of its divisors is an integer number (140135688).

Almost surely, 2^1115513051 is an apocalyptic number.

1115513051 is a deficient number, since it is larger than the sum of its proper divisors (5572453).

1115513051 is an equidigital number, since it uses as much as digits as its factorization.

1115513051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601.

The product of its (nonzero) digits is 375, while the sum is 23.

The square root of 1115513051 is about 33399.2971632638. The cubic root of 1115513051 is about 1037.1101514153.

Adding to 1115513051 its reverse (1503155111), we get a palindrome (2618668162).

The spelling of 1115513051 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, fifty-one".