1155055505 has 16 divisors (see below), whose sum is σ = 1506086400. Its totient is φ = 847169280.

The previous prime is 1155055459. The next prime is 1155055511. The reversal of 1155055505 is 5055505511.

It is not a de Polignac number, because 1155055505 - 2⁶ = 1155055441 is a prime.

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, 193160 + ... + 199049.

It is an arithmetic number, because the mean of its divisors is an integer number (94130400).

Almost surely, 2^1155055505 is an apocalyptic number.

It is an amenable number.

1155055505 is a deficient number, since it is larger than the sum of its proper divisors (351030895).

1155055505 is a wasteful number, since it uses less digits than its factorization.

1155055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392264.

The product of its (nonzero) digits is 15625, while the sum is 32.

The square root of 1155055505 is about 33986.1075294009. The cubic root of 1155055505 is about 1049.2225552671. Note that the first 3 decimals are identical.

The spelling of 1155055505 in words is "one billion, one hundred fifty-five million, fifty-five thousand, five hundred five".