361022561 has 2 divisors, whose sum is σ = 361022562. Its totient is φ = 361022560.

The previous prime is 361022531. The next prime is 361022567. The reversal of 361022561 is 165220163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313962961 + 47059600 = 17719^2 + 6860^2 .

It is a cyclic number.

It is not a de Polignac number, because 361022561 - 2²² = 356828257 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 361022561.

It is not a weakly prime, because it can be changed into another prime (361022567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180511280 + 180511281.

It is an arithmetic number, because the mean of its divisors is an integer number (180511281).

Almost surely, 2^361022561 is an apocalyptic number.

It is an amenable number.

361022561 is a deficient number, since it is larger than the sum of its proper divisors (1).

361022561 is an equidigital number, since it uses as much as digits as its factorization.

361022561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 361022561 is about 19000.5937012505. The cubic root of 361022561 is about 712.0515686937.

The spelling of 361022561 in words is "three hundred sixty-one million, twenty-two thousand, five hundred sixty-one".