2166446553 has 4 divisors (see below), whose sum is σ = 2888595408. Its totient is φ = 1444297700.

The previous prime is 2166446551. The next prime is 2166446573. The reversal of 2166446553 is 3556446612.

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 a cyclic number.

It is not a de Polignac number, because 2166446553 - 2¹ = 2166446551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166446551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361074423 + ... + 361074428.

It is an arithmetic number, because the mean of its divisors is an integer number (722148852).

Almost surely, 2^2166446553 is an apocalyptic number.

It is an amenable number.

2166446553 is a deficient number, since it is larger than the sum of its proper divisors (722148855).

2166446553 is an equidigital number, since it uses as much as digits as its factorization.

2166446553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722148854.

The product of its digits is 518400, while the sum is 42.

The square root of 2166446553 is about 46545.1023524495. The cubic root of 2166446553 is about 1293.9455254347.

The spelling of 2166446553 in words is "two billion, one hundred sixty-six million, four hundred forty-six thousand, five hundred fifty-three".