210350561 has 2 divisors, whose sum is σ = 210350562. Its totient is φ = 210350560.

The previous prime is 210350557. The next prime is 210350599. The reversal of 210350561 is 165053012.

210350561 = 10255² + 10256².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105185536 + 105165025 = 10256^2 + 10255^2 .

It is a cyclic number.

It is not a de Polignac number, because 210350561 - 2² = 210350557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210350461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105175280 + 105175281.

It is an arithmetic number, because the mean of its divisors is an integer number (105175281).

Almost surely, 2^210350561 is an apocalyptic number.

210350561 is the 10256-th centered square number.

It is an amenable number.

210350561 is a deficient number, since it is larger than the sum of its proper divisors (1).

210350561 is an equidigital number, since it uses as much as digits as its factorization.

210350561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 210350561 is about 14503.4672061545. The cubic root of 210350561 is about 594.7227585822.

The spelling of 210350561 in words is "two hundred ten million, three hundred fifty thousand, five hundred sixty-one".