220255597 has 2 divisors, whose sum is σ = 220255598. Its totient is φ = 220255596.

The previous prime is 220255579. The next prime is 220255601. The reversal of 220255597 is 795552022.

220255597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (220255579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217090756 + 3164841 = 14734^2 + 1779^2 .

It is a cyclic number.

It is not a de Polignac number, because 220255597 - 2²⁷ = 86037869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220255507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110127798 + 110127799.

It is an arithmetic number, because the mean of its divisors is an integer number (110127799).

Almost surely, 2^220255597 is an apocalyptic number.

It is an amenable number.

220255597 is a deficient number, since it is larger than the sum of its proper divisors (1).

220255597 is an equidigital number, since it uses as much as digits as its factorization.

220255597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 220255597 is about 14841.0106461791. The cubic root of 220255597 is about 603.9147696719.

The spelling of 220255597 in words is "two hundred twenty million, two hundred fifty-five thousand, five hundred ninety-seven".