55666214 has 4 divisors (see below), whose sum is σ = 83499324. Its totient is φ = 27833106.

The previous prime is 55666199. The next prime is 55666217. The reversal of 55666214 is 41266655.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55666217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13916552 + ... + 13916555.

It is an arithmetic number, because the mean of its divisors is an integer number (20874831).

Almost surely, 2^55666214 is an apocalyptic number.

55666214 is a deficient number, since it is larger than the sum of its proper divisors (27833110).

55666214 is a wasteful number, since it uses less digits than its factorization.

55666214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27833109.

The product of its digits is 43200, while the sum is 35.

The square root of 55666214 is about 7460.9794263220. The cubic root of 55666214 is about 381.8245907568.

The spelling of 55666214 in words is "fifty-five million, six hundred sixty-six thousand, two hundred fourteen".