6556231145 has 8 divisors (see below), whose sum is σ = 7886715720. Its totient is φ = 5232159360.

The previous prime is 6556231141. The next prime is 6556231147. The reversal of 6556231145 is 5411326556.

It can be written as a sum of positive squares in 4 ways, for example, as 1684609936 + 4871621209 = 41044^2 + 69797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6556231145 - 2² = 6556231141 is a prime.

It is a super-2 number, since 2×6556231145² = 85968333653336022050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6556231099 and 6556231108.

It is not an unprimeable number, because it can be changed into a prime (6556231141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600946 + ... + 1605035.

It is an arithmetic number, because the mean of its divisors is an integer number (985839465).

Almost surely, 2^6556231145 is an apocalyptic number.

It is an amenable number.

6556231145 is a deficient number, since it is larger than the sum of its proper divisors (1330484575).

6556231145 is a wasteful number, since it uses less digits than its factorization.

6556231145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206395.

The product of its digits is 108000, while the sum is 38.

The square root of 6556231145 is about 80970.5572723814. The cubic root of 6556231145 is about 1871.6217588782.

The spelling of 6556231145 in words is "six billion, five hundred fifty-six million, two hundred thirty-one thousand, one hundred forty-five".