1167557271 has 8 divisors (see below), whose sum is σ = 1558133760. Its totient is φ = 777676152.

The previous prime is 1167557243. The next prime is 1167557323. The reversal of 1167557271 is 1727557611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1167557271 - 2⁶ = 1167557207 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167557971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169911 + ... + 176648.

It is an arithmetic number, because the mean of its divisors is an integer number (194766720).

Almost surely, 2^1167557271 is an apocalyptic number.

1167557271 is a deficient number, since it is larger than the sum of its proper divisors (390576489).

1167557271 is a wasteful number, since it uses less digits than its factorization.

1167557271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347685.

The product of its digits is 102900, while the sum is 42.

The square root of 1167557271 is about 34169.5371786040. The cubic root of 1167557271 is about 1052.9944065813.

The spelling of 1167557271 in words is "one billion, one hundred sixty-seven million, five hundred fifty-seven thousand, two hundred seventy-one".