1145300553 has 28 divisors (see below), whose sum is σ = 1763616708. Its totient is φ = 742880160.

The previous prime is 1145300531. The next prime is 1145300561. The reversal of 1145300553 is 3550035411.

It can be written as a sum of positive squares in 2 ways, for example, as 1104698169 + 40602384 = 33237^2 + 6372^2 .

It is not a de Polignac number, because 1145300553 - 2⁹ = 1145300041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1145300573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5743 + ... + 48203.

It is an arithmetic number, because the mean of its divisors is an integer number (62986311).

Almost surely, 2^1145300553 is an apocalyptic number.

It is an amenable number.

1145300553 is a deficient number, since it is larger than the sum of its proper divisors (618316155).

1145300553 is an frugal number, since it uses more digits than its factorization.

1145300553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42516 (or 42501 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1145300553 is about 33842.2894172365. The cubic root of 1145300553 is about 1046.2604855002.

Adding to 1145300553 its reverse (3550035411), we get a palindrome (4695335964).

The spelling of 1145300553 in words is "one billion, one hundred forty-five million, three hundred thousand, five hundred fifty-three".