2154004471 has 2 divisors, whose sum is σ = 2154004472. Its totient is φ = 2154004470.

The previous prime is 2154004451. The next prime is 2154004561. The reversal of 2154004471 is 1744004512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154004471 - 2⁵ = 2154004439 is a prime.

It is a super-3 number, since 3×2154004471³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154004451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077002235 + 1077002236.

It is an arithmetic number, because the mean of its divisors is an integer number (1077002236).

Almost surely, 2^2154004471 is an apocalyptic number.

2154004471 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154004471 is an equidigital number, since it uses as much as digits as its factorization.

2154004471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2154004471 is about 46411.2537107112. The cubic root of 2154004471 is about 1291.4636894472.

Adding to 2154004471 its reverse (1744004512), we get a palindrome (3898008983).

The spelling of 2154004471 in words is "two billion, one hundred fifty-four million, four thousand, four hundred seventy-one".