6651241 has 3 divisors (see below), whose sum is σ = 6653821. Its totient is φ = 6648662.

The previous prime is 6651223. The next prime is 6651251. The reversal of 6651241 is 1421566.

The square root of 6651241 is 2579.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6651241 - 2⁹ = 6650729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6651221) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1290 + ... + 3868.

Almost surely, 2^6651241 is an apocalyptic number.

6651241 is the 2579-th square number.

6651241 is the 1290-th centered octagonal number.

It is an amenable number.

6651241 is a deficient number, since it is larger than the sum of its proper divisors (2580).

6651241 is an frugal number, since it uses more digits than its factorization.

6651241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158 (or 2579 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The cubic root of 6651241 is about 188.0619325907.

Multiplying 6651241 by its sum of digits (25), we get a square (166281025 = 12895²).

The spelling of 6651241 in words is "six million, six hundred fifty-one thousand, two hundred forty-one".