554639 has 2 divisors, whose sum is σ = 554640. Its totient is φ = 554638.

The previous prime is 554633. The next prime is 554641. The reversal of 554639 is 936455.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 554639 - 2⁸ = 554383 is a prime.

Together with 554641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554633) 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, 277319 + 277320.

It is an arithmetic number, because the mean of its divisors is an integer number (277320).

2⁵⁵⁴⁶³⁹ is an apocalyptic number.

554639 is a deficient number, since it is larger than the sum of its proper divisors (1).

554639 is an equidigital number, since it uses as much as digits as its factorization.

554639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 554639 is about 744.7408945398. The cubic root of 554639 is about 82.1618358524.

The spelling of 554639 in words is "five hundred fifty-four thousand, six hundred thirty-nine".