345355547 has 2 divisors, whose sum is σ = 345355548. Its totient is φ = 345355546.

The previous prime is 345355477. The next prime is 345355553. The reversal of 345355547 is 745553543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345355547 is a prime.

It is not a weakly prime, because it can be changed into another prime (345315547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172677773 + 172677774.

It is an arithmetic number, because the mean of its divisors is an integer number (172677774).

Almost surely, 2^345355547 is an apocalyptic number.

345355547 is a deficient number, since it is larger than the sum of its proper divisors (1).

345355547 is an equidigital number, since it uses as much as digits as its factorization.

345355547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630000, while the sum is 41.

The square root of 345355547 is about 18583.7441598834. The cubic root of 345355547 is about 701.5987586748.

The spelling of 345355547 in words is "three hundred forty-five million, three hundred fifty-five thousand, five hundred forty-seven".