6651121 has 8 divisors (see below), whose sum is σ = 7243200. Its totient is φ = 6083280.

The previous prime is 6651119. The next prime is 6651133. The reversal of 6651121 is 1211566.

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 6651121 - 2¹ = 6651119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6651092 and 6651101.

It is not an unprimeable number, because it can be changed into a prime (6651101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5485 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (905400).

Almost surely, 2^6651121 is an apocalyptic number.

It is an amenable number.

6651121 is a deficient number, since it is larger than the sum of its proper divisors (592079).

6651121 is a wasteful number, since it uses less digits than its factorization.

6651121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12119.

The product of its digits is 360, while the sum is 22.

The square root of 6651121 is about 2578.9767350637. The cubic root of 6651121 is about 188.0608015954.

Adding to 6651121 its reverse (1211566), we get a palindrome (7862687).

The spelling of 6651121 in words is "six million, six hundred fifty-one thousand, one hundred twenty-one".