55316630 has 64 divisors (see below), whose sum is σ = 108475200. Its totient is φ = 20267520.

The previous prime is 55316609. The next prime is 55316663. The reversal of 55316630 is 3661355.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55316593 and 55316602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906800 + ... + 906860.

It is an arithmetic number, because the mean of its divisors is an integer number (1694925).

Almost surely, 2^55316630 is an apocalyptic number.

55316630 is a deficient number, since it is larger than the sum of its proper divisors (53158570).

55316630 is a wasteful number, since it uses less digits than its factorization.

55316630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 55316630 is about 7437.5150420016. The cubic root of 55316630 is about 381.0236251749.

Adding to 55316630 its reverse (3661355), we get a palindrome (58977985).

The spelling of 55316630 in words is "fifty-five million, three hundred sixteen thousand, six hundred thirty".