43070561 has 2 divisors, whose sum is σ = 43070562. Its totient is φ = 43070560.

The previous prime is 43070557. The next prime is 43070569. The reversal of 43070561 is 16507034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32547025 + 10523536 = 5705^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 43070561 - 2² = 43070557 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 43070561.

It is not a weakly prime, because it can be changed into another prime (43070569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21535280 + 21535281.

It is an arithmetic number, because the mean of its divisors is an integer number (21535281).

Almost surely, 2^43070561 is an apocalyptic number.

It is an amenable number.

43070561 is a deficient number, since it is larger than the sum of its proper divisors (1).

43070561 is an equidigital number, since it uses as much as digits as its factorization.

43070561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 43070561 is about 6562.8165447466. The cubic root of 43070561 is about 350.5313317575.

Adding to 43070561 its reverse (16507034), we get a palindrome (59577595).

The spelling of 43070561 in words is "forty-three million, seventy thousand, five hundred sixty-one".