1153455145 has 4 divisors (see below), whose sum is σ = 1384146180. Its totient is φ = 922764112.

The previous prime is 1153455103. The next prime is 1153455157. The reversal of 1153455145 is 5415543511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 188980009 + 964475136 = 13747^2 + 31056^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153455145 - 2¹¹ = 1153453097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1153455145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115345510 + ... + 115345519.

It is an arithmetic number, because the mean of its divisors is an integer number (346036545).

Almost surely, 2^1153455145 is an apocalyptic number.

It is an amenable number.

1153455145 is a deficient number, since it is larger than the sum of its proper divisors (230691035).

1153455145 is an equidigital number, since it uses as much as digits as its factorization.

1153455145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230691034.

The product of its digits is 30000, while the sum is 34.

The square root of 1153455145 is about 33962.5550422815. Note that the first 3 decimals coincide. The cubic root of 1153455145 is about 1048.7377560825.

Adding to 1153455145 its reverse (5415543511), we get a palindrome (6568998656).

The spelling of 1153455145 in words is "one billion, one hundred fifty-three million, four hundred fifty-five thousand, one hundred forty-five".