1145250445 has 4 divisors (see below), whose sum is σ = 1374300540. Its totient is φ = 916200352.

The previous prime is 1145250443. The next prime is 1145250481. The reversal of 1145250445 is 5440525411.

It is a happy number.

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 175986756 + 969263689 = 13266^2 + 31133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145250445 - 2¹ = 1145250443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145250443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114525040 + ... + 114525049.

It is an arithmetic number, because the mean of its divisors is an integer number (343575135).

Almost surely, 2^1145250445 is an apocalyptic number.

It is an amenable number.

1145250445 is a deficient number, since it is larger than the sum of its proper divisors (229050095).

1145250445 is an equidigital number, since it uses as much as digits as its factorization.

1145250445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229050094.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 1145250445 is about 33841.5490927942. The cubic root of 1145250445 is about 1046.2452269770.

Adding to 1145250445 its reverse (5440525411), we get a palindrome (6585775856).

The spelling of 1145250445 in words is "one billion, one hundred forty-five million, two hundred fifty thousand, four hundred forty-five".