1151241145 has 4 divisors (see below), whose sum is σ = 1381489380. Its totient is φ = 920992912.

The previous prime is 1151241131. The next prime is 1151241163. The reversal of 1151241145 is 5411421511.

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: 5411421511 = 1429 ⋅3786859.

It can be written as a sum of positive squares in 2 ways, for example, as 453647401 + 697593744 = 21299^2 + 26412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151241145 - 2⁹ = 1151240633 is a prime.

It is a super-2 number, since 2×1151241145² = 2650712347881822050, which contains 22 as substring.

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, 115124110 + ... + 115124119.

It is an arithmetic number, because the mean of its divisors is an integer number (345372345).

Almost surely, 2^1151241145 is an apocalyptic number.

It is an amenable number.

1151241145 is a deficient number, since it is larger than the sum of its proper divisors (230248235).

1151241145 is an equidigital number, since it uses as much as digits as its factorization.

1151241145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230248234.

The product of its digits is 800, while the sum is 25.

The square root of 1151241145 is about 33929.9446654426. The cubic root of 1151241145 is about 1048.0663262535.

Adding to 1151241145 its reverse (5411421511), we get a palindrome (6562662656).

The spelling of 1151241145 in words is "one billion, one hundred fifty-one million, two hundred forty-one thousand, one hundred forty-five".