55630 has 8 divisors (see below), whose sum is σ = 100152. Its totient is φ = 22248.

The previous prime is 55621. The next prime is 55631. The reversal of 55630 is 3655.

55630 is nontrivially palindromic in base 11.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 55598 and 55607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2772 + ... + 2791.

It is an arithmetic number, because the mean of its divisors is an integer number (12519).

2⁵⁵⁶³⁰ is an apocalyptic number.

55630 is a deficient number, since it is larger than the sum of its proper divisors (44522).

55630 is a wasteful number, since it uses less digits than its factorization.

55630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55630 is about 235.8601280420. The cubic root of 55630 is about 38.1741773345.

Subtracting from 55630 its sum of digits (19), we obtain a triangular number (55611 = T₃₃₃).

The spelling of 55630 in words is "fifty-five thousand, six hundred thirty".