2051719 has 2 divisors, whose sum is σ = 2051720. Its totient is φ = 2051718.

The previous prime is 2051701. The next prime is 2051743. The reversal of 2051719 is 9171502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051719 is a prime.

It is a super-2 number, since 2×2051719² = 8419101709922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2051693 and 2051702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051759) 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, 1025859 + 1025860.

It is an arithmetic number, because the mean of its divisors is an integer number (1025860).

2^2051719 is an apocalyptic number.

2051719 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051719 is an equidigital number, since it uses as much as digits as its factorization.

2051719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2051719 is about 1432.3822813760. The cubic root of 2051719 is about 127.0689067442.

The spelling of 2051719 in words is "two million, fifty-one thousand, seven hundred nineteen".