6651251 has 2 divisors, whose sum is σ = 6651252. Its totient is φ = 6651250.

The previous prime is 6651223. The next prime is 6651277. The reversal of 6651251 is 1521566.

It is an a-pointer prime, because the next prime (6651277) can be obtained adding 6651251 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6651251 - 2⁶ = 6651187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6651251.

It is not a weakly prime, because it can be changed into another prime (6651221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325625 + 3325626.

It is an arithmetic number, because the mean of its divisors is an integer number (3325626).

Almost surely, 2^6651251 is an apocalyptic number.

6651251 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651251 is an equidigital number, since it uses as much as digits as its factorization.

6651251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 26.

The square root of 6651251 is about 2579.0019387352. The cubic root of 6651251 is about 188.0620268397.

The spelling of 6651251 in words is "six million, six hundred fifty-one thousand, two hundred fifty-one".