43452561 has 8 divisors (see below), whose sum is σ = 61344864. Its totient is φ = 27264320.

The previous prime is 43452551. The next prime is 43452571. The reversal of 43452561 is 16525434.

It is an interprime number because it is at equal distance from previous prime (43452551) and next prime (43452571).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43452561 - 2¹⁵ = 43419793 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43452551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425955 + ... + 426056.

It is an arithmetic number, because the mean of its divisors is an integer number (7668108).

Almost surely, 2^43452561 is an apocalyptic number.

It is an amenable number.

43452561 is a deficient number, since it is larger than the sum of its proper divisors (17892303).

43452561 is a wasteful number, since it uses less digits than its factorization.

43452561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852031.

The product of its digits is 14400, while the sum is 30.

The square root of 43452561 is about 6591.8556567935. The cubic root of 43452561 is about 351.5645900162.

Adding to 43452561 its reverse (16525434), we get a palindrome (59977995).

The spelling of 43452561 in words is "forty-three million, four hundred fifty-two thousand, five hundred sixty-one".