1155503545 has 32 divisors (see below), whose sum is σ = 1625875200. Its totient is φ = 788014080.

The previous prime is 1155503527. The next prime is 1155503551. The reversal of 1155503545 is 5453055511.

It is not a de Polignac number, because 1155503545 - 2⁹ = 1155503033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1155503545.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329250 + ... + 332740.

It is an arithmetic number, because the mean of its divisors is an integer number (50808600).

Almost surely, 2^1155503545 is an apocalyptic number.

It is an amenable number.

1155503545 is a deficient number, since it is larger than the sum of its proper divisors (470371655).

1155503545 is an equidigital number, since it uses as much as digits as its factorization.

1155503545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710 (or 3696 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 1155503545 is about 33992.6984071580. The cubic root of 1155503545 is about 1049.3582003804.

The spelling of 1155503545 in words is "one billion, one hundred fifty-five million, five hundred three thousand, five hundred forty-five".