1153222145 has 8 divisors (see below), whose sum is σ = 1387156200. Its totient is φ = 920384640.

The previous prime is 1153222123. The next prime is 1153222151. The reversal of 1153222145 is 5412223511.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 1153213681 = 92^2 + 33959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1153222145 - 2¹² = 1153218049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271820 + ... + 276029.

It is an arithmetic number, because the mean of its divisors is an integer number (173394525).

Almost surely, 2^1153222145 is an apocalyptic number.

It is an amenable number.

1153222145 is a deficient number, since it is larger than the sum of its proper divisors (233934055).

1153222145 is an equidigital number, since it uses as much as digits as its factorization.

1153222145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548275.

The product of its digits is 2400, while the sum is 26.

The square root of 1153222145 is about 33959.1246206377. The cubic root of 1153222145 is about 1048.6671356937.

Adding to 1153222145 its reverse (5412223511), we get a palindrome (6565445656).

The spelling of 1153222145 in words is "one billion, one hundred fifty-three million, two hundred twenty-two thousand, one hundred forty-five".