55332630 has 96 divisors (see below), whose sum is σ = 149520384. Its totient is φ = 14188608.

The previous prime is 55332623. The next prime is 55332647. The reversal of 55332630 is 3623355.

55332630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55332594 and 55332603.

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 47 ways as a sum of consecutive naturals, for example, 435627 + ... + 435753.

It is an arithmetic number, because the mean of its divisors is an integer number (1557504).

Almost surely, 2^55332630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55332630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74760192).

55332630 is an abundant number, since it is smaller than the sum of its proper divisors (94187754).

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

55332630 is a wasteful number, since it uses less digits than its factorization.

55332630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 55332630 is about 7438.5905923098. The cubic root of 55332630 is about 381.0603578917.

Adding to 55332630 its reverse (3623355), we get a palindrome (58955985).

The spelling of 55332630 in words is "fifty-five million, three hundred thirty-two thousand, six hundred thirty".