55630630 has 64 divisors (see below), whose sum is σ = 117573120. Its totient is φ = 18726400.

The previous prime is 55630507. The next prime is 55630637. The reversal of 55630630 is 3603655.

55630630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55630637) 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 31 ways as a sum of consecutive naturals, for example, 132561 + ... + 132979.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^55630630 is an apocalyptic number.

55630630 is an abundant number, since it is smaller than the sum of its proper divisors (61942490).

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

55630630 is a wasteful number, since it uses less digits than its factorization.

55630630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 55630630 is about 7458.5943715958. The cubic root of 55630630 is about 381.7432143925.

The spelling of 55630630 in words is "fifty-five million, six hundred thirty thousand, six hundred thirty".