1115604601 has 4 divisors (see below), whose sum is σ = 1119752100. Its totient is φ = 1111457104.

The previous prime is 1115604593. The next prime is 1115604619. The reversal of 1115604601 is 1064065111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1064065111 = 31 ⋅34324681.

It can be written as a sum of positive squares in 2 ways, for example, as 272283001 + 843321600 = 16501^2 + 29040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115604601 - 2³ = 1115604593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115604641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2073346 + ... + 2073883.

It is an arithmetic number, because the mean of its divisors is an integer number (279938025).

Almost surely, 2^1115604601 is an apocalyptic number.

It is an amenable number.

1115604601 is a deficient number, since it is larger than the sum of its proper divisors (4147499).

1115604601 is an equidigital number, since it uses as much as digits as its factorization.

1115604601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4147498.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1115604601 is about 33400.6676729673. The cubic root of 1115604601 is about 1037.1385224675.

Adding to 1115604601 its reverse (1064065111), we get a palindrome (2179669712).

The spelling of 1115604601 in words is "one billion, one hundred fifteen million, six hundred four thousand, six hundred one".