55603623 has 8 divisors (see below), whose sum is σ = 74858368. Its totient is φ = 36708984.

The previous prime is 55603621. The next prime is 55603657. The reversal of 55603623 is 32630655.

55603623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55603623 - 2¹ = 55603621 is a prime.

It is a super-2 number, since 2×55603623² = 6183525781452258, 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 (55603621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89665 + ... + 90282.

It is an arithmetic number, because the mean of its divisors is an integer number (9357296).

Almost surely, 2^55603623 is an apocalyptic number.

55603623 is a deficient number, since it is larger than the sum of its proper divisors (19254745).

55603623 is a wasteful number, since it uses less digits than its factorization.

55603623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180053.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 55603623 is about 7456.7836900369. The cubic root of 55603623 is about 381.6814294381.

The spelling of 55603623 in words is "fifty-five million, six hundred three thousand, six hundred twenty-three".