1115144401 has 6 divisors (see below), whose sum is σ = 1297208850. Its totient is φ = 955838016.

The previous prime is 1115144377. The next prime is 1115144417. The reversal of 1115144401 is 1044415111.

It can be written as a sum of positive squares in only one way, i.e., 945624001 + 169520400 = 30751^2 + 13020^2 .

It is not a de Polignac number, because 1115144401 - 2⁷ = 1115144273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115144441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11378976 + ... + 11379073.

It is an arithmetic number, because the mean of its divisors is an integer number (216201475).

Almost surely, 2^1115144401 is an apocalyptic number.

It is an amenable number.

1115144401 is a deficient number, since it is larger than the sum of its proper divisors (182064449).

1115144401 is an equidigital number, since it uses as much as digits as its factorization.

1115144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22758063 (or 22758056 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 1115144401 is about 33393.7778785210. Note that the first 3 decimals coincide. The cubic root of 1115144401 is about 1036.9958922464.

Adding to 1115144401 its reverse (1044415111), we get a palindrome (2159559512).

The spelling of 1115144401 in words is "one billion, one hundred fifteen million, one hundred forty-four thousand, four hundred one".