43160521 has 2 divisors, whose sum is σ = 43160522. Its totient is φ = 43160520.

The previous prime is 43160503. The next prime is 43160531. The reversal of 43160521 is 12506134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 15912121 = 5220^2 + 3989^2 .

It is a cyclic number.

It is not a de Polignac number, because 43160521 - 2¹¹ = 43158473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43160492 and 43160501.

It is not a weakly prime, because it can be changed into another prime (43160531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21580260 + 21580261.

It is an arithmetic number, because the mean of its divisors is an integer number (21580261).

Almost surely, 2^43160521 is an apocalyptic number.

It is an amenable number.

43160521 is a deficient number, since it is larger than the sum of its proper divisors (1).

43160521 is an equidigital number, since it uses as much as digits as its factorization.

43160521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 43160521 is about 6569.6667343177. Note that the first 3 decimals coincide. The cubic root of 43160521 is about 350.7752096236.

Adding to 43160521 its reverse (12506134), we get a palindrome (55666655).

It can be divided in two parts, 43160 and 521, that added together give a square (43681 = 209²).

The spelling of 43160521 in words is "forty-three million, one hundred sixty thousand, five hundred twenty-one".