1155500003 has 8 divisors (see below), whose sum is σ = 1342220640. Its totient is φ = 974191680.

The previous prime is 1155499997. The next prime is 1155500033. The reversal of 1155500003 is 3000055511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1155500003 - 2¹⁰ = 1155498979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155500033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352618 + ... + 1353471.

It is an arithmetic number, because the mean of its divisors is an integer number (167777580).

Almost surely, 2^1155500003 is an apocalyptic number.

1155500003 is a deficient number, since it is larger than the sum of its proper divisors (186720637).

1155500003 is an equidigital number, since it uses as much as digits as its factorization.

1155500003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706157.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 1155500003 is about 33992.6463076943. The cubic root of 1155500003 is about 1049.3571281695.

Adding to 1155500003 its reverse (3000055511), we get a palindrome (4155555514).

The spelling of 1155500003 in words is "one billion, one hundred fifty-five million, five hundred thousand, three".