355061081 has 2 divisors, whose sum is σ = 355061082. Its totient is φ = 355061080.

The previous prime is 355061071. The next prime is 355061087. The reversal of 355061081 is 180160553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261145600 + 93915481 = 16160^2 + 9691^2 .

It is an emirp because it is prime and its reverse (180160553) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355061081 is a prime.

It is a super-2 number, since 2×355061081² = 252136742481777122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (355061087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177530540 + 177530541.

It is an arithmetic number, because the mean of its divisors is an integer number (177530541).

Almost surely, 2^355061081 is an apocalyptic number.

It is an amenable number.

355061081 is a deficient number, since it is larger than the sum of its proper divisors (1).

355061081 is an equidigital number, since it uses as much as digits as its factorization.

355061081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 355061081 is about 18843.0645331379. The cubic root of 355061081 is about 708.1104827477.

The spelling of 355061081 in words is "three hundred fifty-five million, sixty-one thousand, eighty-one".