985520461 has 2 divisors, whose sum is σ = 985520462. Its totient is φ = 985520460.

The previous prime is 985520383. The next prime is 985520477. The reversal of 985520461 is 164025589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772506436 + 213014025 = 27794^2 + 14595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985520461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985520561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492760230 + 492760231.

It is an arithmetic number, because the mean of its divisors is an integer number (492760231).

Almost surely, 2^985520461 is an apocalyptic number.

It is an amenable number.

985520461 is a deficient number, since it is larger than the sum of its proper divisors (1).

985520461 is an equidigital number, since it uses as much as digits as its factorization.

985520461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 985520461 is about 31393.0001911254. Note that the first 3 decimals coincide. The cubic root of 985520461 is about 995.1500025527.

The spelling of 985520461 in words is "nine hundred eighty-five million, five hundred twenty thousand, four hundred sixty-one".