2106454771 has 2 divisors, whose sum is σ = 2106454772. Its totient is φ = 2106454770.

The previous prime is 2106454723. The next prime is 2106454787. The reversal of 2106454771 is 1774546012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2106454771 - 2¹³ = 2106446579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2106454771.

It is not a weakly prime, because it can be changed into another prime (2106454271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053227385 + 1053227386.

It is an arithmetic number, because the mean of its divisors is an integer number (1053227386).

Almost surely, 2^2106454771 is an apocalyptic number.

2106454771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106454771 is an equidigital number, since it uses as much as digits as its factorization.

2106454771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 2106454771 is about 45896.1302399233. The cubic root of 2106454771 is about 1281.8898619365.

The spelling of 2106454771 in words is "two billion, one hundred six million, four hundred fifty-four thousand, seven hundred seventy-one".