55433320 has 16 divisors (see below), whose sum is σ = 124725060. Its totient is φ = 22173312.

The previous prime is 55433303. The next prime is 55433327. The reversal of 55433320 is 2333455.

It is a happy number.

55433320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53319204 + 2114116 = 7302^2 + 1454^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55433327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692877 + ... + 692956.

Almost surely, 2^55433320 is an apocalyptic number.

It is an amenable number.

55433320 is an abundant number, since it is smaller than the sum of its proper divisors (69291740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55433320 is a wasteful number, since it uses less digits than its factorization.

55433320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385844 (or 1385840 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 55433320 is about 7445.3555992981. The cubic root of 55433320 is about 381.2913591250.

Adding to 55433320 its reverse (2333455), we get a palindrome (57766775).

The spelling of 55433320 in words is "fifty-five million, four hundred thirty-three thousand, three hundred twenty".