345545287 has 2 divisors, whose sum is σ = 345545288. Its totient is φ = 345545286.

The previous prime is 345545279. The next prime is 345545303. The reversal of 345545287 is 782545543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345545287 - 2³ = 345545279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345545087) 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, 172772643 + 172772644.

It is an arithmetic number, because the mean of its divisors is an integer number (172772644).

Almost surely, 2^345545287 is an apocalyptic number.

345545287 is a deficient number, since it is larger than the sum of its proper divisors (1).

345545287 is an equidigital number, since it uses as much as digits as its factorization.

345545287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 43.

The square root of 345545287 is about 18588.8484581482. The cubic root of 345545287 is about 701.7272223966.

The spelling of 345545287 in words is "three hundred forty-five million, five hundred forty-five thousand, two hundred eighty-seven".