55481239 has 8 divisors (see below), whose sum is σ = 60595200. Its totient is φ = 50379000.

The previous prime is 55481213. The next prime is 55481243. The reversal of 55481239 is 93218455.

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

It is a cyclic number.

It is not a de Polignac number, because 55481239 - 2²³ = 47092631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55481198 and 55481207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55481039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9162 + ... + 13960.

It is an arithmetic number, because the mean of its divisors is an integer number (7574400).

Almost surely, 2^55481239 is an apocalyptic number.

55481239 is a deficient number, since it is larger than the sum of its proper divisors (5113961).

55481239 is a wasteful number, since it uses less digits than its factorization.

55481239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5861.

The product of its digits is 43200, while the sum is 37.

The square root of 55481239 is about 7448.5729505725. The cubic root of 55481239 is about 381.4011958224.

The spelling of 55481239 in words is "fifty-five million, four hundred eighty-one thousand, two hundred thirty-nine".