1155143445 has 16 divisors (see below), whose sum is σ = 1850280192. Its totient is φ = 615392960.

The previous prime is 1155143411. The next prime is 1155143501. The reversal of 1155143445 is 5443415511.

It is not a de Polignac number, because 1155143445 - 2¹³ = 1155135253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28602 + ... + 55931.

It is an arithmetic number, because the mean of its divisors is an integer number (115642512).

Almost surely, 2^1155143445 is an apocalyptic number.

1155143445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155143445 is a deficient number, since it is larger than the sum of its proper divisors (695136747).

1155143445 is an equidigital number, since it uses as much as digits as its factorization.

1155143445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85452.

The product of its digits is 24000, while the sum is 33.

The square root of 1155143445 is about 33987.4012687054. The cubic root of 1155143445 is about 1049.2491820654.

Adding to 1155143445 its reverse (5443415511), we get a palindrome (6598558956).

The spelling of 1155143445 in words is "one billion, one hundred fifty-five million, one hundred forty-three thousand, four hundred forty-five".