1115432001 has 12 divisors (see below), whose sum is σ = 1611510628. Its totient is φ = 743468544.

The previous prime is 1115431991. The next prime is 1115432009. The reversal of 1115432001 is 1002345111.

It can be written as a sum of positive squares in 2 ways, for example, as 798627600 + 316804401 = 28260^2 + 17799^2 .

It is not a de Polignac number, because 1115432001 - 2⁵ = 1115431969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115432009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49521 + ... + 68433.

Almost surely, 2^1115432001 is an apocalyptic number.

It is an amenable number.

1115432001 is a deficient number, since it is larger than the sum of its proper divisors (496078627).

1115432001 is a wasteful number, since it uses less digits than its factorization.

1115432001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25472 (or 25469 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1115432001 is about 33398.0837923375. The cubic root of 1115432001 is about 1037.0850329840.

Adding to 1115432001 its reverse (1002345111), we get a palindrome (2117777112).

The spelling of 1115432001 in words is "one billion, one hundred fifteen million, four hundred thirty-two thousand, one".