2051629 has 2 divisors, whose sum is σ = 2051630. Its totient is φ = 2051628.

The previous prime is 2051627. The next prime is 2051641. The reversal of 2051629 is 9261502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214404 + 837225 = 1102^2 + 915^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051629 - 2¹ = 2051627 is a prime.

Together with 2051627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025814 + 1025815.

It is an arithmetic number, because the mean of its divisors is an integer number (1025815).

2^2051629 is an apocalyptic number.

It is an amenable number.

2051629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051629 is an equidigital number, since it uses as much as digits as its factorization.

2051629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2051629 is about 1432.3508648372. The cubic root of 2051629 is about 127.0670487300.

The spelling of 2051629 in words is "two million, fifty-one thousand, six hundred twenty-nine".