1153553279 has 2 divisors, whose sum is σ = 1153553280. Its totient is φ = 1153553278.

The previous prime is 1153553189. The next prime is 1153553281. The reversal of 1153553279 is 9723553511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1153553279 - 2²⁴ = 1136776063 is a prime.

Together with 1153553281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153553179) 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 as a sum of consecutive naturals, namely, 576776639 + 576776640.

It is an arithmetic number, because the mean of its divisors is an integer number (576776640).

Almost surely, 2^1153553279 is an apocalyptic number.

1153553279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153553279 is an equidigital number, since it uses as much as digits as its factorization.

1153553279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141750, while the sum is 41.

The square root of 1153553279 is about 33963.9997497350. Note that the first 3 decimals coincide. The cubic root of 1153553279 is about 1048.7674968467.

The spelling of 1153553279 in words is "one billion, one hundred fifty-three million, five hundred fifty-three thousand, two hundred seventy-nine".