55530430 has 16 divisors (see below), whose sum is σ = 100244304. Its totient is φ = 22147840.

The previous prime is 55530421. The next prime is 55530473. The reversal of 55530430 is 3403555.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55530395 and 55530404.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4336 + ... + 11395.

It is an arithmetic number, because the mean of its divisors is an integer number (6265269).

Almost surely, 2^55530430 is an apocalyptic number.

55530430 is a deficient number, since it is larger than the sum of its proper divisors (44713874).

55530430 is a wasteful number, since it uses less digits than its factorization.

55530430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16091.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 55530430 is about 7451.8742608823. The cubic root of 55530430 is about 381.5138823479.

Adding to 55530430 its reverse (3403555), we get a palindrome (58933985).

The spelling of 55530430 in words is "fifty-five million, five hundred thirty thousand, four hundred thirty".