19117055 has 4 divisors (see below), whose sum is σ = 22940472. Its totient is φ = 15293640.

The previous prime is 19117037. The next prime is 19117057. The reversal of 19117055 is 55071191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55071191 = 7 ⋅7867313.

It is not a de Polignac number, because 19117055 - 2¹⁴ = 19100671 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19117057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911701 + ... + 1911710.

It is an arithmetic number, because the mean of its divisors is an integer number (5735118).

Almost surely, 2^19117055 is an apocalyptic number.

19117055 is a deficient number, since it is larger than the sum of its proper divisors (3823417).

19117055 is an equidigital number, since it uses as much as digits as its factorization.

19117055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823416.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 19117055 is about 4372.3054559351. The cubic root of 19117055 is about 267.3870254004.

The spelling of 19117055 in words is "nineteen million, one hundred seventeen thousand, fifty-five".