55518533 has 8 divisors (see below), whose sum is σ = 63603840. Its totient is φ = 47471760.

The previous prime is 55518523. The next prime is 55518539. The reversal of 55518533 is 33581555.

55518533 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 55518533 - 2⁴ = 55518517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55518493 and 55518502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55518539) 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, 6473 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (7950480).

Almost surely, 2^55518533 is an apocalyptic number.

It is an amenable number.

55518533 is a deficient number, since it is larger than the sum of its proper divisors (8085307).

55518533 is a wasteful number, since it uses less digits than its factorization.

55518533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19267.

The product of its digits is 45000, while the sum is 35.

The square root of 55518533 is about 7451.0759625708. The cubic root of 55518533 is about 381.4866348559.

The spelling of 55518533 in words is "fifty-five million, five hundred eighteen thousand, five hundred thirty-three".