55038239 has 2 divisors, whose sum is σ = 55038240. Its totient is φ = 55038238.

The previous prime is 55038173. The next prime is 55038253. The reversal of 55038239 is 93283055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55038239 is a prime.

It is a super-2 number, since 2×55038239² = 6058415504442242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55038199 and 55038208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55032239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27519119 + 27519120.

It is an arithmetic number, because the mean of its divisors is an integer number (27519120).

Almost surely, 2^55038239 is an apocalyptic number.

55038239 is a deficient number, since it is larger than the sum of its proper divisors (1).

55038239 is an equidigital number, since it uses as much as digits as its factorization.

55038239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55038239 is about 7418.7761120012. The cubic root of 55038239 is about 380.3833596583.

The spelling of 55038239 in words is "fifty-five million, thirty-eight thousand, two hundred thirty-nine".