55684215 has 48 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 28451520.

The previous prime is 55684207. The next prime is 55684243. The reversal of 55684215 is 51248655.

55684215 is a `hidden beast` number, since 556 + 84 + 21 + 5 = 666.

It is not a de Polignac number, because 55684215 - 2³ = 55684207 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55684215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249594 + ... + 249816.

It is an arithmetic number, because the mean of its divisors is an integer number (2096640).

Almost surely, 2^55684215 is an apocalyptic number.

55684215 is a deficient number, since it is larger than the sum of its proper divisors (44954505).

55684215 is a wasteful number, since it uses less digits than its factorization.

55684215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 441 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55684215 is about 7462.1856717720. The cubic root of 55684215 is about 381.8657436886.

The spelling of 55684215 in words is "fifty-five million, six hundred eighty-four thousand, two hundred fifteen".