554989 has 4 divisors (see below), whose sum is σ = 556480. Its totient is φ = 553500.

The previous prime is 554977. The next prime is 555029. The reversal of 554989 is 989455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 989455 = 5 ⋅197891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-554989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (139120).

2⁵⁵⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

554989 is a deficient number, since it is larger than the sum of its proper divisors (1491).

554989 is an equidigital number, since it uses as much as digits as its factorization.

554989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490.

The product of its digits is 64800, while the sum is 40.

The square root of 554989 is about 744.9758385344. The cubic root of 554989 is about 82.1791147165.

The spelling of 554989 in words is "five hundred fifty-four thousand, nine hundred eighty-nine".