55117159 has 2 divisors, whose sum is σ = 55117160. Its totient is φ = 55117158.

The previous prime is 55117123. The next prime is 55117201. The reversal of 55117159 is 95171155.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55117159 - 2⁷ = 55117031 is a prime.

It is equal to p_3288832 and since 55117159 and 3288832 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55117759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27558579 + 27558580.

It is an arithmetic number, because the mean of its divisors is an integer number (27558580).

Almost surely, 2^55117159 is an apocalyptic number.

55117159 is a deficient number, since it is larger than the sum of its proper divisors (1).

55117159 is an equidigital number, since it uses as much as digits as its factorization.

55117159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7875, while the sum is 34.

The square root of 55117159 is about 7424.0931432735. The cubic root of 55117159 is about 380.5650849345.

The spelling of 55117159 in words is "fifty-five million, one hundred seventeen thousand, one hundred fifty-nine".