55423320 has 32 divisors (see below), whose sum is σ = 166270320. Its totient is φ = 14779520.

The previous prime is 55423301. The next prime is 55423343. The reversal of 55423320 is 2332455.

55423320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 230811 + ... + 231050.

Almost surely, 2^55423320 is an apocalyptic number.

It is an amenable number.

55423320 is an abundant number, since it is smaller than the sum of its proper divisors (110847000).

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

55423320 is a wasteful number, since it uses less digits than its factorization.

55423320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461875 (or 461871 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 55423320 is about 7444.6840094124. The cubic root of 55423320 is about 381.2684298177.

Adding to 55423320 its reverse (2332455), we get a palindrome (57755775).

The spelling of 55423320 in words is "fifty-five million, four hundred twenty-three thousand, three hundred twenty".