1955671 has 2 divisors, whose sum is σ = 1955672. Its totient is φ = 1955670.

The previous prime is 1955641. The next prime is 1955687. The reversal of 1955671 is 1765591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1955671 - 2⁷ = 1955543 is a prime.

1955671 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1955641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977835 + 977836.

It is an arithmetic number, because the mean of its divisors is an integer number (977836).

2^1955671 is an apocalyptic number.

1955671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955671 is an equidigital number, since it uses as much as digits as its factorization.

1955671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 34.

The square root of 1955671 is about 1398.4530739356. The cubic root of 1955671 is about 125.0542910831.

The spelling of 1955671 in words is "one million, nine hundred fifty-five thousand, six hundred seventy-one".