2151659 has 2 divisors, whose sum is σ = 2151660. Its totient is φ = 2151658.

The previous prime is 2151647. The next prime is 2151683. The reversal of 2151659 is 9561512.

2151659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2151659 - 2⁸ = 2151403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2151619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075829 + 1075830.

It is an arithmetic number, because the mean of its divisors is an integer number (1075830).

2^2151659 is an apocalyptic number.

2151659 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151659 is an equidigital number, since it uses as much as digits as its factorization.

2151659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 29.

The square root of 2151659 is about 1466.8534350780. The cubic root of 2151659 is about 129.0994765824.

The spelling of 2151659 in words is "two million, one hundred fifty-one thousand, six hundred fifty-nine".