2236555091 has 2 divisors, whose sum is σ = 2236555092. Its totient is φ = 2236555090.

The previous prime is 2236555049. The next prime is 2236555129. The reversal of 2236555091 is 1905556322.

It is an a-pointer prime, because the next prime (2236555129) can be obtained adding 2236555091 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2236555091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2236555031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118277545 + 1118277546.

It is an arithmetic number, because the mean of its divisors is an integer number (1118277546).

Almost surely, 2^2236555091 is an apocalyptic number.

2236555091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2236555091 is an equidigital number, since it uses as much as digits as its factorization.

2236555091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 2236555091 is about 47292.2307678545. The cubic root of 2236555091 is about 1307.7554343519.

The spelling of 2236555091 in words is "two billion, two hundred thirty-six million, five hundred fifty-five thousand, ninety-one".