1145531603 has 4 divisors (see below), whose sum is σ = 1205822760. Its totient is φ = 1085240448.

The previous prime is 1145531579. The next prime is 1145531617. The reversal of 1145531603 is 3061355411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145531603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145531663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30145550 + ... + 30145587.

It is an arithmetic number, because the mean of its divisors is an integer number (301455690).

Almost surely, 2^1145531603 is an apocalyptic number.

1145531603 is a deficient number, since it is larger than the sum of its proper divisors (60291157).

1145531603 is an equidigital number, since it uses as much as digits as its factorization.

1145531603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60291156.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1145531603 is about 33845.7028734816. The cubic root of 1145531603 is about 1046.3308374063.

The spelling of 1145531603 in words is "one billion, one hundred forty-five million, five hundred thirty-one thousand, six hundred three".