345355553 has 2 divisors, whose sum is σ = 345355554. Its totient is φ = 345355552.

The previous prime is 345355547. The next prime is 345355583. The reversal of 345355553 is 355553543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277655569 + 67699984 = 16663^2 + 8228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345355553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345355583) 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, 172677776 + 172677777.

It is an arithmetic number, because the mean of its divisors is an integer number (172677777).

Almost surely, 2^345355553 is an apocalyptic number.

It is an amenable number.

345355553 is a deficient number, since it is larger than the sum of its proper divisors (1).

345355553 is an equidigital number, since it uses as much as digits as its factorization.

345355553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 337500, while the sum is 38.

The square root of 345355553 is about 18583.7443213148. The cubic root of 345355553 is about 701.5987627379.

The spelling of 345355553 in words is "three hundred forty-five million, three hundred fifty-five thousand, five hundred fifty-three".