55208613 has 8 divisors (see below), whose sum is σ = 75986176. Its totient is φ = 35618400.

The previous prime is 55208611. The next prime is 55208627. The reversal of 55208613 is 31680255.

55208613 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 55208613 - 2¹ = 55208611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55208611) 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, 296728 + ... + 296913.

It is an arithmetic number, because the mean of its divisors is an integer number (9498272).

Almost surely, 2^55208613 is an apocalyptic number.

It is an amenable number.

55208613 is a deficient number, since it is larger than the sum of its proper divisors (20777563).

55208613 is a wasteful number, since it uses less digits than its factorization.

55208613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593675.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55208613 is about 7430.2498612092. The cubic root of 55208613 is about 380.7754547953.

Adding to 55208613 its reverse (31680255), we get a palindrome (86888868).

The spelling of 55208613 in words is "fifty-five million, two hundred eight thousand, six hundred thirteen".