355643 has 2 divisors, whose sum is σ = 355644. Its totient is φ = 355642.

The previous prime is 355633. The next prime is 355651. The reversal of 355643 is 346553.

It is a strong prime.

It is an emirp because it is prime and its reverse (346553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 355643 - 2¹⁰ = 354619 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (355633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177821 + 177822.

It is an arithmetic number, because the mean of its divisors is an integer number (177822).

2³⁵⁵⁶⁴³ is an apocalyptic number.

355643 is a deficient number, since it is larger than the sum of its proper divisors (1).

355643 is an equidigital number, since it uses as much as digits as its factorization.

355643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 26.

The square root of 355643 is about 596.3581138880. The cubic root of 355643 is about 70.8497118604.

The spelling of 355643 in words is "three hundred fifty-five thousand, six hundred forty-three".