43550461 has 2 divisors, whose sum is σ = 43550462. Its totient is φ = 43550460.

The previous prime is 43550453. The next prime is 43550509. The reversal of 43550461 is 16405534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35105625 + 8444836 = 5925^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 43550461 - 2³ = 43550453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43550561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21775230 + 21775231.

It is an arithmetic number, because the mean of its divisors is an integer number (21775231).

Almost surely, 2^43550461 is an apocalyptic number.

It is an amenable number.

43550461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43550461 is an equidigital number, since it uses as much as digits as its factorization.

43550461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 43550461 is about 6599.2773089180. The cubic root of 43550461 is about 351.8284207047.

Adding to 43550461 its reverse (16405534), we get a palindrome (59955995).

The spelling of 43550461 in words is "forty-three million, five hundred fifty thousand, four hundred sixty-one".