2554643165 has 8 divisors (see below), whose sum is σ = 3068877240. Its totient is φ = 2041510912.

The previous prime is 2554643141. The next prime is 2554643173. The reversal of 2554643165 is 5613464552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 179640409 + 2375002756 = 13403^2 + 48734^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2554643165 - 2⁶ = 2554643101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270344 + ... + 279633.

It is an arithmetic number, because the mean of its divisors is an integer number (383609655).

Almost surely, 2^2554643165 is an apocalyptic number.

It is an amenable number.

2554643165 is a deficient number, since it is larger than the sum of its proper divisors (514234075).

2554643165 is an equidigital number, since it uses as much as digits as its factorization.

2554643165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550911.

The product of its digits is 432000, while the sum is 41.

The square root of 2554643165 is about 50543.4779669939. The cubic root of 2554643165 is about 1367.0259182142.

The spelling of 2554643165 in words is "two billion, five hundred fifty-four million, six hundred forty-three thousand, one hundred sixty-five".