530833781 has 2 divisors, whose sum is σ = 530833782. Its totient is φ = 530833780.

The previous prime is 530833727. The next prime is 530833817. The reversal of 530833781 is 187338035.

It is a happy number.

Together with next prime (530833817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460960900 + 69872881 = 21470^2 + 8359^2 .

It is a cyclic number.

It is not a de Polignac number, because 530833781 - 2⁶ = 530833717 is a prime.

It is a super-2 number, since 2×530833781² = 563569006101511922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530833481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265416890 + 265416891.

It is an arithmetic number, because the mean of its divisors is an integer number (265416891).

Almost surely, 2^530833781 is an apocalyptic number.

It is an amenable number.

530833781 is a deficient number, since it is larger than the sum of its proper divisors (1).

530833781 is an equidigital number, since it uses as much as digits as its factorization.

530833781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 530833781 is about 23039.8303162154. The cubic root of 530833781 is about 809.6913832168.

The spelling of 530833781 in words is "five hundred thirty million, eight hundred thirty-three thousand, seven hundred eighty-one".