1117255217 has 16 divisors (see below), whose sum is σ = 1228628352. Its totient is φ = 1009704960.

The previous prime is 1117255213. The next prime is 1117255229. The reversal of 1117255217 is 7125527111.

It is a cyclic number.

It is not a de Polignac number, because 1117255217 - 2² = 1117255213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1117255213) 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, 141617 + ... + 149297.

It is an arithmetic number, because the mean of its divisors is an integer number (76789272).

Almost surely, 2^1117255217 is an apocalyptic number.

It is an amenable number.

1117255217 is a deficient number, since it is larger than the sum of its proper divisors (111373135).

1117255217 is a wasteful number, since it uses less digits than its factorization.

1117255217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928.

The product of its digits is 4900, while the sum is 32.

The square root of 1117255217 is about 33425.3678663377. The cubic root of 1117255217 is about 1037.6497770315.

The spelling of 1117255217 in words is "one billion, one hundred seventeen million, two hundred fifty-five thousand, two hundred seventeen".