55089239 has 2 divisors, whose sum is σ = 55089240. Its totient is φ = 55089238.

The previous prime is 55089193. The next prime is 55089247. The reversal of 55089239 is 93298055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55089239 - 2⁸ = 55088983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55089196 and 55089205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55082239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27544619 + 27544620.

It is an arithmetic number, because the mean of its divisors is an integer number (27544620).

Almost surely, 2^55089239 is an apocalyptic number.

55089239 is a deficient number, since it is larger than the sum of its proper divisors (1).

55089239 is an equidigital number, since it uses as much as digits as its factorization.

55089239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 55089239 is about 7422.2125407455. The cubic root of 55089239 is about 380.5008147388.

The spelling of 55089239 in words is "fifty-five million, eighty-nine thousand, two hundred thirty-nine".