530121281 has 2 divisors, whose sum is σ = 530121282. Its totient is φ = 530121280.

The previous prime is 530121203. The next prime is 530121283. The reversal of 530121281 is 182121035.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521711281 + 8410000 = 22841^2 + 2900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530121281 is a prime.

It is a super-2 number, since 2×530121281² = 562057145138161922, which contains 22 as substring.

Together with 530121283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (530121283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265060640 + 265060641.

It is an arithmetic number, because the mean of its divisors is an integer number (265060641).

Almost surely, 2^530121281 is an apocalyptic number.

It is an amenable number.

530121281 is a deficient number, since it is larger than the sum of its proper divisors (1).

530121281 is an equidigital number, since it uses as much as digits as its factorization.

530121281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 530121281 is about 23024.3627707696. The cubic root of 530121281 is about 809.3289575156.

The spelling of 530121281 in words is "five hundred thirty million, one hundred twenty-one thousand, two hundred eighty-one".