6005555551 has 4 divisors (see below), whose sum is σ = 6006267400. Its totient is φ = 6004843704.

The previous prime is 6005555533. The next prime is 6005555561. The reversal of 6005555551 is 1555555006.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6005555551 - 2²¹ = 6003458399 is a prime.

It is a super-2 number, since 2×6005555551² = 72133394952293827202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6005555551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6005555531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343116 + ... + 360193.

It is an arithmetic number, because the mean of its divisors is an integer number (1501566850).

Almost surely, 2^6005555551 is an apocalyptic number.

6005555551 is a deficient number, since it is larger than the sum of its proper divisors (711849).

6005555551 is an equidigital number, since it uses as much as digits as its factorization.

6005555551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711848.

The product of its (nonzero) digits is 93750, while the sum is 37.

The square root of 6005555551 is about 77495.5195543588. The cubic root of 6005555551 is about 1817.6812590520.

The spelling of 6005555551 in words is "six billion, five million, five hundred fifty-five thousand, five hundred fifty-one".