11551117 has 2 divisors, whose sum is σ = 11551118. Its totient is φ = 11551116.

The previous prime is 11551103. The next prime is 11551121. The reversal of 11551117 is 71115511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 4076361 = 2734^2 + 2019^2 .

It is a cyclic number.

It is not a de Polignac number, because 11551117 - 2¹⁵ = 11518349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11551147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775558 + 5775559.

It is an arithmetic number, because the mean of its divisors is an integer number (5775559).

Almost surely, 2^11551117 is an apocalyptic number.

It is an amenable number.

11551117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551117 is an equidigital number, since it uses as much as digits as its factorization.

11551117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 175, while the sum is 22.

The square root of 11551117 is about 3398.6934254210. The cubic root of 11551117 is about 226.0518128522.

Adding to 11551117 its reverse (71115511), we get a palindrome (82666628).

The spelling of 11551117 in words is "eleven million, five hundred fifty-one thousand, one hundred seventeen".