1117561271 has 8 divisors (see below), whose sum is σ = 1146051984. Its totient is φ = 1089184320.

The previous prime is 1117561259. The next prime is 1117561327. The reversal of 1117561271 is 1721657111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117561271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117561201) 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, 8366 + ... + 48011.

It is an arithmetic number, because the mean of its divisors is an integer number (143256498).

Almost surely, 2^1117561271 is an apocalyptic number.

1117561271 is a deficient number, since it is larger than the sum of its proper divisors (28490713).

1117561271 is an equidigital number, since it uses as much as digits as its factorization.

1117561271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56881.

The product of its digits is 2940, while the sum is 32.

The square root of 1117561271 is about 33429.9457223610. The cubic root of 1117561271 is about 1037.7445175068.

The spelling of 1117561271 in words is "one billion, one hundred seventeen million, five hundred sixty-one thousand, two hundred seventy-one".