55565223 has 16 divisors (see below), whose sum is σ = 84777216. Its totient is φ = 31711680.

The previous prime is 55565219. The next prime is 55565227. The reversal of 55565223 is 32256555.

It is an interprime number because it is at equal distance from previous prime (55565219) and next prime (55565227).

It is not a de Polignac number, because 55565223 - 2² = 55565219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55565227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26740 + ... + 28742.

It is an arithmetic number, because the mean of its divisors is an integer number (5298576).

Almost surely, 2^55565223 is an apocalyptic number.

55565223 is a deficient number, since it is larger than the sum of its proper divisors (29211993).

55565223 is a wasteful number, since it uses less digits than its factorization.

55565223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334.

The product of its digits is 45000, while the sum is 33.

The square root of 55565223 is about 7454.2084086776. The cubic root of 55565223 is about 381.5935458234.

The spelling of 55565223 in words is "fifty-five million, five hundred sixty-five thousand, two hundred twenty-three".