55235239 has 4 divisors (see below), whose sum is σ = 55251000. Its totient is φ = 55219480.

The previous prime is 55235209. The next prime is 55235251. The reversal of 55235239 is 93253255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55235239 - 2⁹ = 55234727 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 (55235209) 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, 12 + ... + 10510.

It is an arithmetic number, because the mean of its divisors is an integer number (13812750).

Almost surely, 2^55235239 is an apocalyptic number.

55235239 is a deficient number, since it is larger than the sum of its proper divisors (15761).

55235239 is a wasteful number, since it uses less digits than its factorization.

55235239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15760.

The product of its digits is 40500, while the sum is 34.

The square root of 55235239 is about 7432.0413750194. The cubic root of 55235239 is about 380.8366583967.

The spelling of 55235239 in words is "fifty-five million, two hundred thirty-five thousand, two hundred thirty-nine".