55330623 has 6 divisors (see below), whose sum is σ = 79922024. Its totient is φ = 36887076.

The previous prime is 55330619. The next prime is 55330633. The reversal of 55330623 is 32603355.

55330623 is a `hidden beast` number, since 5 + 5 + 3 + 30 + 623 = 666.

It is not a de Polignac number, because 55330623 - 2² = 55330619 is a prime.

It is a super-2 number, since 2×55330623² = 6122955683136258, 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 (55330633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3073915 + ... + 3073932.

Almost surely, 2^55330623 is an apocalyptic number.

55330623 is a deficient number, since it is larger than the sum of its proper divisors (24591401).

55330623 is a wasteful number, since it uses less digits than its factorization.

55330623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6147853 (or 6147850 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 55330623 is about 7438.4556864984. The cubic root of 55330623 is about 381.0557506200.

Adding to 55330623 its reverse (32603355), we get a palindrome (87933978).

The spelling of 55330623 in words is "fifty-five million, three hundred thirty thousand, six hundred twenty-three".