43553161 has 8 divisors (see below), whose sum is σ = 44576640. Its totient is φ = 42533808.

The previous prime is 43553131. The next prime is 43553179. The reversal of 43553161 is 16135534.

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 43553161 - 2¹¹ = 43551113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43553131) 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, 32670 + ... + 33976.

It is an arithmetic number, because the mean of its divisors is an integer number (5572080).

Almost surely, 2^43553161 is an apocalyptic number.

It is an amenable number.

43553161 is a deficient number, since it is larger than the sum of its proper divisors (1023479).

43553161 is a wasteful number, since it uses less digits than its factorization.

43553161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063.

The product of its digits is 5400, while the sum is 28.

The square root of 43553161 is about 6599.4818736019. The cubic root of 43553161 is about 351.8356913289.

Adding to 43553161 its reverse (16135534), we get a palindrome (59688695).

The spelling of 43553161 in words is "forty-three million, five hundred fifty-three thousand, one hundred sixty-one".