6101721 has 12 divisors (see below), whose sum is σ = 8963760. Its totient is φ = 3998520.

The previous prime is 6101701. The next prime is 6101729. The reversal of 6101721 is 1271016.

It is not a de Polignac number, because 6101721 - 2⁷ = 6101593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6101694 and 6101703.

It is not an unprimeable number, because it can be changed into a prime (6101729) 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 11 ways as a sum of consecutive naturals, for example, 5215 + ... + 6276.

It is an arithmetic number, because the mean of its divisors is an integer number (746980).

Almost surely, 2^6101721 is an apocalyptic number.

It is an amenable number.

6101721 is a deficient number, since it is larger than the sum of its proper divisors (2862039).

6101721 is a wasteful number, since it uses less digits than its factorization.

6101721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556 (or 11553 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 6101721 is about 2470.1661887412. The cubic root of 6101721 is about 182.7331953635.

Adding to 6101721 its reverse (1271016), we get a palindrome (7372737).

The spelling of 6101721 in words is "six million, one hundred one thousand, seven hundred twenty-one".