55080989 has 2 divisors, whose sum is σ = 55080990. Its totient is φ = 55080988.

The previous prime is 55080983. The next prime is 55081007. The reversal of 55080989 is 98908055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47844889 + 7236100 = 6917^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 55080989 - 2⁴ = 55080973 is a prime.

It is a super-3 number, since 3×55080989³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_3286799 and since 55080989 and 3286799 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55080983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27540494 + 27540495.

It is an arithmetic number, because the mean of its divisors is an integer number (27540495).

Almost surely, 2^55080989 is an apocalyptic number.

It is an amenable number.

55080989 is a deficient number, since it is larger than the sum of its proper divisors (1).

55080989 is an equidigital number, since it uses as much as digits as its factorization.

55080989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 44.

The square root of 55080989 is about 7421.6567557386. The cubic root of 55080989 is about 380.4818195684.

The spelling of 55080989 in words is "fifty-five million, eighty thousand, nine hundred eighty-nine".