55618547 has 4 divisors (see below), whose sum is σ = 55906920. Its totient is φ = 55330176.

The previous prime is 55618513. The next prime is 55618561. The reversal of 55618547 is 74581655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74581655 = 5 ⋅14916331.

It is a cyclic number.

It is not a de Polignac number, because 55618547 - 2¹⁴ = 55602163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55618597) 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, 143897 + ... + 144282.

It is an arithmetic number, because the mean of its divisors is an integer number (13976730).

Almost surely, 2^55618547 is an apocalyptic number.

55618547 is a deficient number, since it is larger than the sum of its proper divisors (288373).

55618547 is a wasteful number, since it uses less digits than its factorization.

55618547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288372.

The product of its digits is 168000, while the sum is 41.

The square root of 55618547 is about 7457.7843224379. The cubic root of 55618547 is about 381.7155741203.

It can be divided in two parts, 55618 and 547, that added together give a palindrome (56165).

The spelling of 55618547 in words is "fifty-five million, six hundred eighteen thousand, five hundred forty-seven".