1145223051 has 24 divisors (see below), whose sum is σ = 1800613584. Its totient is φ = 645442560.

The previous prime is 1145223017. The next prime is 1145223067. The reversal of 1145223051 is 1503225411.

It is a happy number.

It is not a de Polignac number, because 1145223051 - 2¹⁰ = 1145222027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145223011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42630 + ... + 64091.

It is an arithmetic number, because the mean of its divisors is an integer number (75025566).

Almost surely, 2^1145223051 is an apocalyptic number.

1145223051 is a deficient number, since it is larger than the sum of its proper divisors (655390533).

1145223051 is a wasteful number, since it uses less digits than its factorization.

1145223051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106811 (or 106804 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1145223051 is about 33841.1443512184. The cubic root of 1145223051 is about 1046.2368849675.

Adding to 1145223051 its reverse (1503225411), we get a palindrome (2648448462).

The spelling of 1145223051 in words is "one billion, one hundred forty-five million, two hundred twenty-three thousand, fifty-one".