530450906981 has 2 divisors, whose sum is σ = 530450906982. Its totient is φ = 530450906980.

The previous prime is 530450906957. The next prime is 530450907031. The reversal of 530450906981 is 189609054035.

It is a happy number.

It is an a-pointer prime, because the next prime (530450907031) can be obtained adding 530450906981 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498246809956 + 32204097025 = 705866^2 + 179455^2 .

It is a cyclic number.

It is not a de Polignac number, because 530450906981 - 2⁶ = 530450906917 is a prime.

It is a super-2 number, since 2×530450906981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530450906911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265225453490 + 265225453491.

It is an arithmetic number, because the mean of its divisors is an integer number (265225453491).

Almost surely, 2^530450906981 is an apocalyptic number.

It is an amenable number.

530450906981 is a deficient number, since it is larger than the sum of its proper divisors (1).

530450906981 is an equidigital number, since it uses as much as digits as its factorization.

530450906981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 530450906981 in words is "five hundred thirty billion, four hundred fifty million, nine hundred six thousand, nine hundred eighty-one".