705522001 has 2 divisors, whose sum is σ = 705522002. Its totient is φ = 705522000.

The previous prime is 705521989. The next prime is 705522007. The reversal of 705522001 is 100225507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382241601 + 323280400 = 19551^2 + 17980^2 .

It is an emirp because it is prime and its reverse (100225507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 705522001 - 2¹¹ = 705519953 is a prime.

It is a super-2 number, since 2×705522001² = 995522587790088002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (705522007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352761000 + 352761001.

It is an arithmetic number, because the mean of its divisors is an integer number (352761001).

Almost surely, 2^705522001 is an apocalyptic number.

It is an amenable number.

705522001 is a deficient number, since it is larger than the sum of its proper divisors (1).

705522001 is an equidigital number, since it uses as much as digits as its factorization.

705522001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 705522001 is about 26561.6641233188. The cubic root of 705522001 is about 890.2326543221.

Adding to 705522001 its reverse (100225507), we get a palindrome (805747508).

The spelling of 705522001 in words is "seven hundred five million, five hundred twenty-two thousand, one".