55357239 has 8 divisors (see below), whose sum is σ = 84353920. Its totient is φ = 31632696.

The previous prime is 55357213. The next prime is 55357243. The reversal of 55357239 is 93275355.

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

It is not a de Polignac number, because 55357239 - 2⁹ = 55356727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55357197 and 55357206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55357639) 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, 1318009 + ... + 1318050.

It is an arithmetic number, because the mean of its divisors is an integer number (10544240).

Almost surely, 2^55357239 is an apocalyptic number.

55357239 is a deficient number, since it is larger than the sum of its proper divisors (28996681).

55357239 is a wasteful number, since it uses less digits than its factorization.

55357239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636069.

The product of its digits is 141750, while the sum is 39.

The square root of 55357239 is about 7440.2445524324. The cubic root of 55357239 is about 381.1168412873.

The spelling of 55357239 in words is "fifty-five million, three hundred fifty-seven thousand, two hundred thirty-nine".