2239555771 has 2 divisors, whose sum is σ = 2239555772. Its totient is φ = 2239555770.

The previous prime is 2239555667. The next prime is 2239555777. The reversal of 2239555771 is 1775559322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2239555771 - 2¹³ = 2239547579 is a prime.

It is a super-2 number, since 2×2239555771² = 10031220102838808882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2239555777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119777885 + 1119777886.

It is an arithmetic number, because the mean of its divisors is an integer number (1119777886).

Almost surely, 2^2239555771 is an apocalyptic number.

2239555771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239555771 is an equidigital number, since it uses as much as digits as its factorization.

2239555771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 661500, while the sum is 46.

The square root of 2239555771 is about 47323.9450067299. The cubic root of 2239555771 is about 1308.3400241597.

The spelling of 2239555771 in words is "two billion, two hundred thirty-nine million, five hundred fifty-five thousand, seven hundred seventy-one".