550671397 has 2 divisors, whose sum is σ = 550671398. Its totient is φ = 550671396.

The previous prime is 550671371. The next prime is 550671403. The reversal of 550671397 is 793176055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322238401 + 228432996 = 17951^2 + 15114^2 .

It is a cyclic number.

It is not a de Polignac number, because 550671397 - 2¹¹ = 550669349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550671307) 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, 275335698 + 275335699.

It is an arithmetic number, because the mean of its divisors is an integer number (275335699).

Almost surely, 2^550671397 is an apocalyptic number.

It is an amenable number.

550671397 is a deficient number, since it is larger than the sum of its proper divisors (1).

550671397 is an equidigital number, since it uses as much as digits as its factorization.

550671397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 550671397 is about 23466.3886654935. The cubic root of 550671397 is about 819.6545228184.

The spelling of 550671397 in words is "five hundred fifty million, six hundred seventy-one thousand, three hundred ninety-seven".