2173155080 has 16 divisors (see below), whose sum is σ = 4889599020. Its totient is φ = 869262016.

The previous prime is 2173155071. The next prime is 2173155091. The reversal of 2173155080 is 805513712.

It can be written as a sum of positive squares in 2 ways, for example, as 2162436004 + 10719076 = 46502^2 + 3274^2 .

It is an unprimeable number.

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, 27164399 + ... + 27164478.

Almost surely, 2^2173155080 is an apocalyptic number.

2173155080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2173155080 is an abundant number, since it is smaller than the sum of its proper divisors (2716443940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2173155080 is a wasteful number, since it uses less digits than its factorization.

2173155080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54328888 (or 54328884 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 2173155080 is about 46617.1114506251. Note that the first 3 decimals coincide. The cubic root of 2173155080 is about 1295.2797415972.

Adding to 2173155080 its reverse (805513712), we get a palindrome (2978668792).

The spelling of 2173155080 in words is "two billion, one hundred seventy-three million, one hundred fifty-five thousand, eighty".