345555593 has 2 divisors, whose sum is σ = 345555594. Its totient is φ = 345555592.

The previous prime is 345555571. The next prime is 345555629. The reversal of 345555593 is 395555543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341991049 + 3564544 = 18493^2 + 1888^2 .

It is an emirp because it is prime and its reverse (395555543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345555593 - 2¹² = 345551497 is a prime.

It is a super-3 number, since 3×345555593³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (345555493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172777796 + 172777797.

It is an arithmetic number, because the mean of its divisors is an integer number (172777797).

Almost surely, 2^345555593 is an apocalyptic number.

It is an amenable number.

345555593 is a deficient number, since it is larger than the sum of its proper divisors (1).

345555593 is an equidigital number, since it uses as much as digits as its factorization.

345555593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1012500, while the sum is 44.

The square root of 345555593 is about 18589.1256652915. The cubic root of 345555593 is about 701.7341987411.

The spelling of 345555593 in words is "three hundred forty-five million, five hundred fifty-five thousand, five hundred ninety-three".