2162651 has 2 divisors, whose sum is σ = 2162652.
Its totient is φ = 2162650.
The previous prime is 2162647. The next prime is 2162659. The reversal of 2162651 is 1562612.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2162651 - 22 = 2162647 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (2162659) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081325 + 1081326.
It is an arithmetic number, because the mean of its divisors is an integer number (1081326).
22162651 is an apocalyptic number.
2162651 is a deficient number, since it is larger than the sum of its proper divisors (1).
2162651 is an equidigital number, since it uses as much as digits as its factorization.
2162651 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 720, while the sum is 23.
The square root of 2162651 is about 1470.5954576293.
The cubic root of 2162651 is about 129.3189431740.
The spelling of 2162651 in words is "two million, one hundred sixty-two thousand, six hundred fifty-one".