2721171000 has 128 divisors (see below), whose sum is σ = 8547701760. Its totient is φ = 720720000.

The previous prime is 2721170999. The next prime is 2721171001. The reversal of 2721171000 is 1711272.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2721170999) and next prime (2721171001).

It is a super-2 number, since 2×2721171000² = 14809543222482000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721171001) 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 31 ways as a sum of consecutive naturals, for example, 449997 + ... + 456003.

It is an arithmetic number, because the mean of its divisors is an integer number (66778920).

Almost surely, 2^2721171000 is an apocalyptic number.

2721171000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2721171000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4273850880).

2721171000 is an abundant number, since it is smaller than the sum of its proper divisors (5826530760).

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

2721171000 is a wasteful number, since it uses less digits than its factorization.

2721171000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182 (or 6168 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 2721171000 is about 52164.8444836175. The cubic root of 2721171000 is about 1396.1067000543.

Adding to 2721171000 its reverse (1711272), we get a palindrome (2722882272).

The spelling of 2721171000 in words is "two billion, seven hundred twenty-one million, one hundred seventy-one thousand".