55606823 has 4 divisors (see below), whose sum is σ = 56044800. Its totient is φ = 55168848.

The previous prime is 55606753. The next prime is 55606829. The reversal of 55606823 is 32860655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32860655 = 5 ⋅6572131.

It is a cyclic number.

It is not a de Polignac number, because 55606823 - 2⁸ = 55606567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55606829) 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, 218798 + ... + 219051.

It is an arithmetic number, because the mean of its divisors is an integer number (14011200).

Almost surely, 2^55606823 is an apocalyptic number.

55606823 is a deficient number, since it is larger than the sum of its proper divisors (437977).

55606823 is a wasteful number, since it uses less digits than its factorization.

55606823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437976.

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

The square root of 55606823 is about 7456.9982566714. The cubic root of 55606823 is about 381.6887512461.

The spelling of 55606823 in words is "fifty-five million, six hundred six thousand, eight hundred twenty-three".