1155275171 has 16 divisors (see below), whose sum is σ = 1281576960. Its totient is φ = 1036506240.

The previous prime is 1155275167. The next prime is 1155275201. The reversal of 1155275171 is 1715725511.

It is a cyclic number.

It is not a de Polignac number, because 1155275171 - 2² = 1155275167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155275101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18950 + ... + 51668.

It is an arithmetic number, because the mean of its divisors is an integer number (80098560).

Almost surely, 2^1155275171 is an apocalyptic number.

1155275171 is a deficient number, since it is larger than the sum of its proper divisors (126301789).

1155275171 is a wasteful number, since it uses less digits than its factorization.

1155275171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32834.

The product of its digits is 12250, while the sum is 35.

The square root of 1155275171 is about 33989.3390785993. The cubic root of 1155275171 is about 1049.2890640227.

The spelling of 1155275171 in words is "one billion, one hundred fifty-five million, two hundred seventy-five thousand, one hundred seventy-one".