2155502207 has 2 divisors, whose sum is σ = 2155502208. Its totient is φ = 2155502206.

The previous prime is 2155502189. The next prime is 2155502221. The reversal of 2155502207 is 7022055512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2155502207 - 2¹⁴ = 2155485823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2155502207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155502257) 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, 1077751103 + 1077751104.

It is an arithmetic number, because the mean of its divisors is an integer number (1077751104).

Almost surely, 2^2155502207 is an apocalyptic number.

2155502207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155502207 is an equidigital number, since it uses as much as digits as its factorization.

2155502207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 2155502207 is about 46427.3863899315. The cubic root of 2155502207 is about 1291.7629496612.

Adding to 2155502207 its reverse (7022055512), we get a palindrome (9177557719).

The spelling of 2155502207 in words is "two billion, one hundred fifty-five million, five hundred two thousand, two hundred seven".