1155114553 has 4 divisors (see below), whose sum is σ = 1155701988. Its totient is φ = 1154527120.

The previous prime is 1155114539. The next prime is 1155114559. The reversal of 1155114553 is 3554115511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3554115511 = 5531 ⋅642581.

It can be written as a sum of positive squares in 2 ways, for example, as 401721849 + 753392704 = 20043^2 + 27448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155114553 - 2⁹ = 1155114041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155114559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290758 + ... + 294703.

It is an arithmetic number, because the mean of its divisors is an integer number (288925497).

Almost surely, 2^1155114553 is an apocalyptic number.

It is an amenable number.

1155114553 is a deficient number, since it is larger than the sum of its proper divisors (587435).

1155114553 is an equidigital number, since it uses as much as digits as its factorization.

1155114553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587434.

The product of its digits is 7500, while the sum is 31.

The square root of 1155114553 is about 33986.9762261958. The cubic root of 1155114553 is about 1049.2404341879.

The spelling of 1155114553 in words is "one billion, one hundred fifty-five million, one hundred fourteen thousand, five hundred fifty-three".