1115601001 has 8 divisors (see below), whose sum is σ = 1142174664. Its totient is φ = 1089294720.

The previous prime is 1115600989. The next prime is 1115601031. The reversal of 1115601001 is 1001065111.

It can be written as a sum of positive squares in 4 ways, for example, as 114511401 + 1001089600 = 10701^2 + 31640^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115601001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115601031) 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, 58390 + ... + 75103.

It is an arithmetic number, because the mean of its divisors is an integer number (142771833).

Almost surely, 2^1115601001 is an apocalyptic number.

It is an amenable number.

1115601001 is a deficient number, since it is larger than the sum of its proper divisors (26573663).

1115601001 is a wasteful number, since it uses less digits than its factorization.

1115601001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133691.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 1115601001 is about 33400.6137817855. The cubic root of 1115601001 is about 1037.1374068683.

Adding to 1115601001 its reverse (1001065111), we get a palindrome (2116666112).

The spelling of 1115601001 in words is "one billion, one hundred fifteen million, six hundred one thousand, one".