55644206 has 8 divisors (see below), whose sum is σ = 83519040. Its totient is φ = 27804528.

The previous prime is 55644187. The next prime is 55644209. The reversal of 55644206 is 60244655.

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

It is a super-2 number, since 2×55644206² = 6192555322740872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391 + ... + 11426.

It is an arithmetic number, because the mean of its divisors is an integer number (10439880).

Almost surely, 2^55644206 is an apocalyptic number.

55644206 is a deficient number, since it is larger than the sum of its proper divisors (27874834).

55644206 is a wasteful number, since it uses less digits than its factorization.

55644206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17578.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 55644206 is about 7459.5044071305. The cubic root of 55644206 is about 381.7742651784.

The spelling of 55644206 in words is "fifty-five million, six hundred forty-four thousand, two hundred six".