2051947 has 2 divisors, whose sum is σ = 2051948. Its totient is φ = 2051946.

The previous prime is 2051923. The next prime is 2051963. The reversal of 2051947 is 7491502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2054947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025973 + 1025974.

It is an arithmetic number, because the mean of its divisors is an integer number (1025974).

2^2051947 is an apocalyptic number.

2051947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051947 is an equidigital number, since it uses as much as digits as its factorization.

2051947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2051947 is about 1432.4618668572. The cubic root of 2051947 is about 127.0736134702.

The spelling of 2051947 in words is "two million, fifty-one thousand, nine hundred forty-seven".