550139797 has 2 divisors, whose sum is σ = 550139798. Its totient is φ = 550139796.

The previous prime is 550139761. The next prime is 550139801. The reversal of 550139797 is 797931055.

It is a happy number.

550139797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 536663556 + 13476241 = 23166^2 + 3671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550139797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550139197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275069898 + 275069899.

It is an arithmetic number, because the mean of its divisors is an integer number (275069899).

Almost surely, 2^550139797 is an apocalyptic number.

It is an amenable number.

550139797 is a deficient number, since it is larger than the sum of its proper divisors (1).

550139797 is an equidigital number, since it uses as much as digits as its factorization.

550139797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 297675, while the sum is 46.

The square root of 550139797 is about 23455.0590918036. The cubic root of 550139797 is about 819.3906820871.

The spelling of 550139797 in words is "five hundred fifty million, one hundred thirty-nine thousand, seven hundred ninety-seven".