355340047 has 2 divisors, whose sum is σ = 355340048. Its totient is φ = 355340046.

The previous prime is 355340023. The next prime is 355340057. The reversal of 355340047 is 740043553.

It is a strong prime.

It is an emirp because it is prime and its reverse (740043553) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355340047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355340057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177670023 + 177670024.

It is an arithmetic number, because the mean of its divisors is an integer number (177670024).

Almost surely, 2^355340047 is an apocalyptic number.

355340047 is a deficient number, since it is larger than the sum of its proper divisors (1).

355340047 is an equidigital number, since it uses as much as digits as its factorization.

355340047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 355340047 is about 18850.4654319197. The cubic root of 355340047 is about 708.2958846853.

The spelling of 355340047 in words is "three hundred fifty-five million, three hundred forty thousand, forty-seven".