55686782 has 16 divisors (see below), whose sum is σ = 86387472. Its totient is φ = 26906880.

The previous prime is 55686779. The next prime is 55686811. The reversal of 55686782 is 28768655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182 + ... + 11022.

It is an arithmetic number, because the mean of its divisors is an integer number (5399217).

Almost surely, 2^55686782 is an apocalyptic number.

55686782 is a deficient number, since it is larger than the sum of its proper divisors (30700690).

55686782 is a wasteful number, since it uses less digits than its factorization.

55686782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7963.

The product of its digits is 806400, while the sum is 47.

The square root of 55686782 is about 7462.3576703345. The cubic root of 55686782 is about 381.8716115053.

The spelling of 55686782 in words is "fifty-five million, six hundred eighty-six thousand, seven hundred eighty-two".