1171552155 has 16 divisors (see below), whose sum is σ = 1934951424. Its totient is φ = 604671840.

The previous prime is 1171552139. The next prime is 1171552169. The reversal of 1171552155 is 5512551711.

It is not a de Polignac number, because 1171552155 - 2⁴ = 1171552139 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, 1259269 + ... + 1260198.

It is an arithmetic number, because the mean of its divisors is an integer number (120934464).

Almost surely, 2^1171552155 is an apocalyptic number.

1171552155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1171552155 is a deficient number, since it is larger than the sum of its proper divisors (763399269).

1171552155 is a wasteful number, since it uses less digits than its factorization.

1171552155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519506.

The product of its digits is 8750, while the sum is 33.

The square root of 1171552155 is about 34227.9440662158. The cubic root of 1171552155 is about 1054.1940056616.

The spelling of 1171552155 in words is "one billion, one hundred seventy-one million, five hundred fifty-two thousand, one hundred fifty-five".