43530281 has 2 divisors, whose sum is σ = 43530282. Its totient is φ = 43530280.

The previous prime is 43530257. The next prime is 43530307. The reversal of 43530281 is 18203534.

It is an a-pointer prime, because the next prime (43530307) can be obtained adding 43530281 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25755625 + 17774656 = 5075^2 + 4216^2 .

It is a cyclic number.

It is not a de Polignac number, because 43530281 - 2¹⁰ = 43529257 is a prime.

It is a super-2 number, since 2×43530281² = 3789770727877922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43530281.

It is not a weakly prime, because it can be changed into another prime (43560281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21765140 + 21765141.

It is an arithmetic number, because the mean of its divisors is an integer number (21765141).

Almost surely, 2^43530281 is an apocalyptic number.

It is an amenable number.

43530281 is a deficient number, since it is larger than the sum of its proper divisors (1).

43530281 is an equidigital number, since it uses as much as digits as its factorization.

43530281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 43530281 is about 6597.7481764614. The cubic root of 43530281 is about 351.7740700023.

The spelling of 43530281 in words is "forty-three million, five hundred thirty thousand, two hundred eighty-one".