55432443 has 32 divisors (see below), whose sum is σ = 85478400. Its totient is φ = 31600800.

The previous prime is 55432441. The next prime is 55432453. The reversal of 55432443 is 34423455.

It is not a de Polignac number, because 55432443 - 2¹ = 55432441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55432443.

It is not an unprimeable number, because it can be changed into a prime (55432441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132088 + ... + 132506.

It is an arithmetic number, because the mean of its divisors is an integer number (2671200).

Almost surely, 2^55432443 is an apocalyptic number.

55432443 is a deficient number, since it is larger than the sum of its proper divisors (30045957).

55432443 is a wasteful number, since it uses less digits than its factorization.

55432443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its digits is 28800, while the sum is 30.

The square root of 55432443 is about 7445.2967032886. The cubic root of 55432443 is about 381.2893483351.

Adding to 55432443 its reverse (34423455), we get a palindrome (89855898).

The spelling of 55432443 in words is "fifty-five million, four hundred thirty-two thousand, four hundred forty-three".