2154506771 has 2 divisors, whose sum is σ = 2154506772. Its totient is φ = 2154506770.

The previous prime is 2154506737. The next prime is 2154506777. The reversal of 2154506771 is 1776054512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2154506771 - 2¹⁸ = 2154244627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2154506777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077253385 + 1077253386.

It is an arithmetic number, because the mean of its divisors is an integer number (1077253386).

Almost surely, 2^2154506771 is an apocalyptic number.

2154506771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154506771 is an equidigital number, since it uses as much as digits as its factorization.

2154506771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 2154506771 is about 46416.6647983243. The cubic root of 2154506771 is about 1291.5640686560.

The spelling of 2154506771 in words is "two billion, one hundred fifty-four million, five hundred six thousand, seven hundred seventy-one".