345456547 has 2 divisors, whose sum is σ = 345456548. Its totient is φ = 345456546.

The previous prime is 345456523. The next prime is 345456557. The reversal of 345456547 is 745654543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345456547 - 2¹⁵ = 345423779 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (345456557) 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, 172728273 + 172728274.

It is an arithmetic number, because the mean of its divisors is an integer number (172728274).

Almost surely, 2^345456547 is an apocalyptic number.

345456547 is a deficient number, since it is larger than the sum of its proper divisors (1).

345456547 is an equidigital number, since it uses as much as digits as its factorization.

345456547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 43.

The square root of 345456547 is about 18586.4613899473. The cubic root of 345456547 is about 701.6671467158.

The spelling of 345456547 in words is "three hundred forty-five million, four hundred fifty-six thousand, five hundred forty-seven".