1155001445 has 8 divisors (see below), whose sum is σ = 1492617336. Its totient is φ = 852924096.

The previous prime is 1155001427. The next prime is 1155001451. The reversal of 1155001445 is 5441005511.

It can be written as a sum of positive squares in 4 ways, for example, as 122921569 + 1032079876 = 11087^2 + 32126^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1155001445 - 2¹⁸ = 1154739301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8884562 + ... + 8884691.

It is an arithmetic number, because the mean of its divisors is an integer number (186577167).

Almost surely, 2^1155001445 is an apocalyptic number.

It is an amenable number.

1155001445 is a deficient number, since it is larger than the sum of its proper divisors (337615891).

1155001445 is a wasteful number, since it uses less digits than its factorization.

1155001445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17769271.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1155001445 is about 33985.3121951234. The cubic root of 1155001445 is about 1049.2061861096.

Adding to 1155001445 its reverse (5441005511), we get a palindrome (6596006956).

The spelling of 1155001445 in words is "one billion, one hundred fifty-five million, one thousand, four hundred forty-five".