5555919181 has 4 divisors (see below), whose sum is σ = 5848336000. Its totient is φ = 5263502364.

The previous prime is 5555919163. The next prime is 5555919191. The reversal of 5555919181 is 1819195555.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1819195555 = 5 ⋅363839111.

It is a cyclic number.

It is not a de Polignac number, because 5555919181 - 2¹³ = 5555910989 is a prime.

It is a super-2 number, since 2×5555919181² = 61736475891607421522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555919121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146208381 + ... + 146208418.

It is an arithmetic number, because the mean of its divisors is an integer number (1462084000).

Almost surely, 2^5555919181 is an apocalyptic number.

It is an amenable number.

5555919181 is a deficient number, since it is larger than the sum of its proper divisors (292416819).

5555919181 is a wasteful number, since it uses less digits than its factorization.

5555919181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292416818.

The product of its digits is 405000, while the sum is 49.

The square root of 5555919181 is about 74538.0384837165. The cubic root of 5555919181 is about 1771.1362554308.

The spelling of 5555919181 in words is "five billion, five hundred fifty-five million, nine hundred nineteen thousand, one hundred eighty-one".