2051969 has 2 divisors, whose sum is σ = 2051970. Its totient is φ = 2051968.

The previous prime is 2051963. The next prime is 2051999. The reversal of 2051969 is 9691502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721344 + 330625 = 1312^2 + 575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051969 is a prime.

It is a super-2 number, since 2×2051969² = 8421153553922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2051963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025984 + 1025985.

It is an arithmetic number, because the mean of its divisors is an integer number (1025985).

2^2051969 is an apocalyptic number.

It is an amenable number.

2051969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051969 is an equidigital number, since it uses as much as digits as its factorization.

2051969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 2051969 is about 1432.4695459241. The cubic root of 2051969 is about 127.0740676096.

The spelling of 2051969 in words is "two million, fifty-one thousand, nine hundred sixty-nine".