1155505015 has 12 divisors (see below), whose sum is σ = 1612991016. Its totient is φ = 792346128.

The previous prime is 1155505003. The next prime is 1155505037. The reversal of 1155505015 is 5105055511.

It is not a de Polignac number, because 1155505015 - 2¹⁹ = 1154980727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2357929 + ... + 2358418.

It is an arithmetic number, because the mean of its divisors is an integer number (134415918).

Almost surely, 2^1155505015 is an apocalyptic number.

1155505015 is a deficient number, since it is larger than the sum of its proper divisors (457486001).

1155505015 is an equidigital number, since it uses as much as digits as its factorization.

1155505015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716366 (or 4716359 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 28.

The square root of 1155505015 is about 33992.7200294416. The cubic root of 1155505015 is about 1049.3586453685.

The spelling of 1155505015 in words is "one billion, one hundred fifty-five million, five hundred five thousand, fifteen".