55630215 has 48 divisors (see below), whose sum is σ = 102435840. Its totient is φ = 27867840.

The previous prime is 55630199. The next prime is 55630217. The reversal of 55630215 is 51203655.

55630215 is a `hidden beast` number, since 5 + 5 + 630 + 21 + 5 = 666.

55630215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55630215 - 2⁴ = 55630199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55630217) 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 47 ways as a sum of consecutive naturals, for example, 60610 + ... + 61520.

It is an arithmetic number, because the mean of its divisors is an integer number (2134080).

Almost surely, 2^55630215 is an apocalyptic number.

55630215 is a deficient number, since it is larger than the sum of its proper divisors (46805625).

55630215 is a wasteful number, since it uses less digits than its factorization.

55630215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55630215 is about 7458.5665512885. The cubic root of 55630215 is about 381.7422651323.

The spelling of 55630215 in words is "fifty-five million, six hundred thirty thousand, two hundred fifteen".