55866386 has 8 divisors (see below), whose sum is σ = 88729020. Its totient is φ = 26290048.

The previous prime is 55866373. The next prime is 55866407. The reversal of 55866386 is 68366855.

It can be written as a sum of positive squares in 2 ways, for example, as 50197225 + 5669161 = 7085^2 + 2381^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 55866386.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821531 + ... + 821598.

Almost surely, 2^55866386 is an apocalyptic number.

55866386 is a deficient number, since it is larger than the sum of its proper divisors (32862634).

55866386 is a wasteful number, since it uses less digits than its factorization.

55866386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643148.

The product of its digits is 1036800, while the sum is 47.

The square root of 55866386 is about 7474.3819811406. The cubic root of 55866386 is about 382.2817152013.

The spelling of 55866386 in words is "fifty-five million, eight hundred sixty-six thousand, three hundred eighty-six".