355980173 has 2 divisors, whose sum is σ = 355980174. Its totient is φ = 355980172.

The previous prime is 355980169. The next prime is 355980199. The reversal of 355980173 is 371089553.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353552809 + 2427364 = 18803^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 355980173 - 2² = 355980169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 355980173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355980673) 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, 177990086 + 177990087.

It is an arithmetic number, because the mean of its divisors is an integer number (177990087).

Almost surely, 2^355980173 is an apocalyptic number.

It is an amenable number.

355980173 is a deficient number, since it is larger than the sum of its proper divisors (1).

355980173 is an equidigital number, since it uses as much as digits as its factorization.

355980173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 355980173 is about 18867.4368423482. The cubic root of 355980173 is about 708.7209485358.

The spelling of 355980173 in words is "three hundred fifty-five million, nine hundred eighty thousand, one hundred seventy-three".