1115400541 has 4 divisors (see below), whose sum is σ = 1115682912. Its totient is φ = 1115118172.

The previous prime is 1115400527. The next prime is 1115400551. The reversal of 1115400541 is 1450045111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1115400541 - 2⁵ = 1115400509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115400551) 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, 135175 + ... + 143188.

It is an arithmetic number, because the mean of its divisors is an integer number (278920728).

Almost surely, 2^1115400541 is an apocalyptic number.

It is an amenable number.

1115400541 is a deficient number, since it is larger than the sum of its proper divisors (282371).

1115400541 is an equidigital number, since it uses as much as digits as its factorization.

1115400541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282370.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1115400541 is about 33397.6128039116. The cubic root of 1115400541 is about 1037.0752828000.

Adding to 1115400541 its reverse (1450045111), we get a palindrome (2565445652).

The spelling of 1115400541 in words is "one billion, one hundred fifteen million, four hundred thousand, five hundred forty-one".