550051639 has 2 divisors, whose sum is σ = 550051640. Its totient is φ = 550051638.

The previous prime is 550051637. The next prime is 550051651. The reversal of 550051639 is 936150055.

550051639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550051639 - 2¹ = 550051637 is a prime.

Together with 550051637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550051633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275025819 + 275025820.

It is an arithmetic number, because the mean of its divisors is an integer number (275025820).

Almost surely, 2^550051639 is an apocalyptic number.

550051639 is a deficient number, since it is larger than the sum of its proper divisors (1).

550051639 is an equidigital number, since it uses as much as digits as its factorization.

550051639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 550051639 is about 23453.1797204558. The cubic root of 550051639 is about 819.3469115746.

It can be divided in two parts, 55005 and 1639, that added together give a square (56644 = 238²).

The spelling of 550051639 in words is "five hundred fifty million, fifty-one thousand, six hundred thirty-nine".