43552001 has 2 divisors, whose sum is σ = 43552002. Its totient is φ = 43552000.

The previous prime is 43551979. The next prime is 43552007. The reversal of 43552001 is 10025534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27552001 + 16000000 = 5249^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 43552001 - 2¹⁴ = 43535617 is a prime.

It is a super-2 number, since 2×43552001² = 3793553582208002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43552007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21776000 + 21776001.

It is an arithmetic number, because the mean of its divisors is an integer number (21776001).

Almost surely, 2^43552001 is an apocalyptic number.

It is an amenable number.

43552001 is a deficient number, since it is larger than the sum of its proper divisors (1).

43552001 is an equidigital number, since it uses as much as digits as its factorization.

43552001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 43552001 is about 6599.3939873294. The cubic root of 43552001 is about 351.8325676901.

Adding to 43552001 its reverse (10025534), we get a palindrome (53577535).

The spelling of 43552001 in words is "forty-three million, five hundred fifty-two thousand, one".