55538817 has 8 divisors (see below), whose sum is σ = 74989440. Its totient is φ = 36557040.

The previous prime is 55538797. The next prime is 55538849. The reversal of 55538817 is 71883555.

It is a happy number.

55538817 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 55538817 - 2²³ = 47150209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55538317) 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, 116934 + ... + 117407.

It is an arithmetic number, because the mean of its divisors is an integer number (9373680).

Almost surely, 2^55538817 is an apocalyptic number.

It is an amenable number.

55538817 is a deficient number, since it is larger than the sum of its proper divisors (19450623).

55538817 is a wasteful number, since it uses less digits than its factorization.

55538817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234423.

The product of its digits is 168000, while the sum is 42.

The square root of 55538817 is about 7452.4369839671. The cubic root of 55538817 is about 381.5330886092.

The spelling of 55538817 in words is "fifty-five million, five hundred thirty-eight thousand, eight hundred seventeen".