345543047 has 2 divisors, whose sum is σ = 345543048. Its totient is φ = 345543046.

The previous prime is 345543043. The next prime is 345543049. The reversal of 345543047 is 740345543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345543047 - 2² = 345543043 is a prime.

Together with 345543049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 345542998 and 345543016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345543041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172771523 + 172771524.

It is an arithmetic number, because the mean of its divisors is an integer number (172771524).

Almost surely, 2^345543047 is an apocalyptic number.

345543047 is a deficient number, since it is larger than the sum of its proper divisors (1).

345543047 is an equidigital number, since it uses as much as digits as its factorization.

345543047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 35.

The square root of 345543047 is about 18588.7882068735. The cubic root of 345543047 is about 701.7257060760.

The spelling of 345543047 in words is "three hundred forty-five million, five hundred forty-three thousand, forty-seven".