550649387 has 2 divisors, whose sum is σ = 550649388. Its totient is φ = 550649386.

The previous prime is 550649353. The next prime is 550649399. The reversal of 550649387 is 783946055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550649387 - 2¹⁰ = 550648363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550649347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275324693 + 275324694.

It is an arithmetic number, because the mean of its divisors is an integer number (275324694).

Almost surely, 2^550649387 is an apocalyptic number.

550649387 is a deficient number, since it is larger than the sum of its proper divisors (1).

550649387 is an equidigital number, since it uses as much as digits as its factorization.

550649387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 550649387 is about 23465.9196921834. The cubic root of 550649387 is about 819.6436023090.

The spelling of 550649387 in words is "five hundred fifty million, six hundred forty-nine thousand, three hundred eighty-seven".