55986089 has 2 divisors, whose sum is σ = 55986090. Its totient is φ = 55986088.

The previous prime is 55986079. The next prime is 55986097. The reversal of 55986089 is 98068955.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 8265625 = 6908^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 55986089 - 2⁸ = 55985833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55986059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27993044 + 27993045.

It is an arithmetic number, because the mean of its divisors is an integer number (27993045).

Almost surely, 2^55986089 is an apocalyptic number.

It is an amenable number.

55986089 is a deficient number, since it is larger than the sum of its proper divisors (1).

55986089 is an equidigital number, since it uses as much as digits as its factorization.

55986089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 55986089 is about 7482.3852480342. The cubic root of 55986089 is about 382.5545544242.

The spelling of 55986089 in words is "fifty-five million, nine hundred eighty-six thousand, eighty-nine".