2239555657 has 2 divisors, whose sum is σ = 2239555658. Its totient is φ = 2239555656.

The previous prime is 2239555649. The next prime is 2239555663. The reversal of 2239555657 is 7565559322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1742979001 + 496576656 = 41749^2 + 22284^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239555657 - 2³ = 2239555649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2239555657.

It is not a weakly prime, because it can be changed into another prime (2239555607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119777828 + 1119777829.

It is an arithmetic number, because the mean of its divisors is an integer number (1119777829).

Almost surely, 2^2239555657 is an apocalyptic number.

It is an amenable number.

2239555657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239555657 is an equidigital number, since it uses as much as digits as its factorization.

2239555657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835000, while the sum is 49.

The square root of 2239555657 is about 47323.9438022657. The cubic root of 2239555657 is about 1308.3400019602.

The spelling of 2239555657 in words is "two billion, two hundred thirty-nine million, five hundred fifty-five thousand, six hundred fifty-seven".