55517169 has 4 divisors (see below), whose sum is σ = 74022896. Its totient is φ = 37011444.

The previous prime is 55517159. The next prime is 55517179. The reversal of 55517169 is 96171555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (55517159) and next prime (55517179).

It is not a de Polignac number, because 55517169 - 2¹¹ = 55515121 is a prime.

It is a super-3 number, since 3×55517169³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55517149) 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, 9252859 + ... + 9252864.

It is an arithmetic number, because the mean of its divisors is an integer number (18505724).

Almost surely, 2^55517169 is an apocalyptic number.

It is an amenable number.

55517169 is a deficient number, since it is larger than the sum of its proper divisors (18505727).

55517169 is a wasteful number, since it uses less digits than its factorization.

55517169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18505726.

The product of its digits is 47250, while the sum is 39.

The square root of 55517169 is about 7450.9844316037. The cubic root of 55517169 is about 381.4835106617.

It can be divided in two parts, 5551 and 7169, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 55517169 in words is "fifty-five million, five hundred seventeen thousand, one hundred sixty-nine".