1155060505 has 4 divisors (see below), whose sum is σ = 1386072612. Its totient is φ = 924048400.

The previous prime is 1155060499. The next prime is 1155060541. The reversal of 1155060505 is 5050605511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5050605511 = 7 ⋅721515073.

It can be written as a sum of positive squares in 2 ways, for example, as 921001104 + 234059401 = 30348^2 + 15299^2 .

It is not a de Polignac number, because 1155060505 - 2⁷ = 1155060377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115506046 + ... + 115506055.

It is an arithmetic number, because the mean of its divisors is an integer number (346518153).

Almost surely, 2^1155060505 is an apocalyptic number.

It is an amenable number.

1155060505 is a deficient number, since it is larger than the sum of its proper divisors (231012107).

1155060505 is an equidigital number, since it uses as much as digits as its factorization.

1155060505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231012106.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1155060505 is about 33986.1810887896. The cubic root of 1155060505 is about 1049.2240692218.

The spelling of 1155060505 in words is "one billion, one hundred fifty-five million, sixty thousand, five hundred five".