345556513 has 2 divisors, whose sum is σ = 345556514. Its totient is φ = 345556512.

The previous prime is 345556481. The next prime is 345556609. The reversal of 345556513 is 315655543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345104929 + 451584 = 18577^2 + 672^2 .

It is a cyclic number.

It is not a de Polignac number, because 345556513 - 2⁵ = 345556481 is a prime.

It is equal to p_18577522 and since 345556513 and 18577522 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (345556313) 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, 172778256 + 172778257.

It is an arithmetic number, because the mean of its divisors is an integer number (172778257).

Almost surely, 2^345556513 is an apocalyptic number.

It is an amenable number.

345556513 is a deficient number, since it is larger than the sum of its proper divisors (1).

345556513 is an equidigital number, since it uses as much as digits as its factorization.

345556513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 37.

The square root of 345556513 is about 18589.1504109252. The cubic root of 345556513 is about 701.7348215014.

The spelling of 345556513 in words is "three hundred forty-five million, five hundred fifty-six thousand, five hundred thirteen".