55686319 has 8 divisors (see below), whose sum is σ = 60403280. Its totient is φ = 51031296.

The previous prime is 55686299. The next prime is 55686329. The reversal of 55686319 is 91368655.

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

It is a cyclic number.

It is not a de Polignac number, because 55686319 - 2⁹ = 55685807 is a prime.

It is a super-2 number, since 2×55686319² = 6201932247539522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55686329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13602 + ... + 17215.

It is an arithmetic number, because the mean of its divisors is an integer number (7550410).

Almost surely, 2^55686319 is an apocalyptic number.

55686319 is a deficient number, since it is larger than the sum of its proper divisors (4716961).

55686319 is a wasteful number, since it uses less digits than its factorization.

55686319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30969.

The product of its digits is 194400, while the sum is 43.

The square root of 55686319 is about 7462.3266479028. The cubic root of 55686319 is about 381.8705531629.

The spelling of 55686319 in words is "fifty-five million, six hundred eighty-six thousand, three hundred nineteen".