54988889 has 2 divisors, whose sum is σ = 54988890. Its totient is φ = 54988888.

The previous prime is 54988859. The next prime is 54988903. The reversal of 54988889 is 98888945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43665664 + 11323225 = 6608^2 + 3365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54988889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54988859) 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 as a sum of consecutive naturals, namely, 27494444 + 27494445.

It is an arithmetic number, because the mean of its divisors is an integer number (27494445).

Almost surely, 2^54988889 is an apocalyptic number.

It is an amenable number.

54988889 is a deficient number, since it is larger than the sum of its proper divisors (1).

54988889 is an equidigital number, since it uses as much as digits as its factorization.

54988889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 59.

The square root of 54988889 is about 7415.4493457915. The cubic root of 54988889 is about 380.2696355001.

It can be divided in two parts, 5 and 4988889, that added together give a palindrome (4988894).

The spelling of 54988889 in words is "fifty-four million, nine hundred eighty-eight thousand, eight hundred eighty-nine".