55839089 has 4 divisors (see below), whose sum is σ = 57201060. Its totient is φ = 54477120.

The previous prime is 55839079. The next prime is 55839107. The reversal of 55839089 is 98093855.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4243600 + 51595489 = 2060^2 + 7183^2 .

It is a cyclic number.

It is not a de Polignac number, because 55839089 - 2²⁴ = 39061873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55839079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680924 + ... + 681005.

It is an arithmetic number, because the mean of its divisors is an integer number (14300265).

Almost surely, 2^55839089 is an apocalyptic number.

It is an amenable number.

55839089 is a deficient number, since it is larger than the sum of its proper divisors (1361971).

55839089 is a wasteful number, since it uses less digits than its factorization.

55839089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361970.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 55839089 is about 7472.5557207692. Note that the first 3 decimals coincide. The cubic root of 55839089 is about 382.2194425495.

The spelling of 55839089 in words is "fifty-five million, eight hundred thirty-nine thousand, eighty-nine".