355231649 has 2 divisors, whose sum is σ = 355231650. Its totient is φ = 355231648.

The previous prime is 355231631. The next prime is 355231717. The reversal of 355231649 is 946132553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186049600 + 169182049 = 13640^2 + 13007^2 .

It is an emirp because it is prime and its reverse (946132553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 355231649 - 2¹⁶ = 355166113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (355231249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177615824 + 177615825.

It is an arithmetic number, because the mean of its divisors is an integer number (177615825).

Almost surely, 2^355231649 is an apocalyptic number.

It is an amenable number.

355231649 is a deficient number, since it is larger than the sum of its proper divisors (1).

355231649 is an equidigital number, since it uses as much as digits as its factorization.

355231649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 355231649 is about 18847.5900050908. The cubic root of 355231649 is about 708.2238544648.

The spelling of 355231649 in words is "three hundred fifty-five million, two hundred thirty-one thousand, six hundred forty-nine".