550750691 has 2 divisors, whose sum is σ = 550750692. Its totient is φ = 550750690.

The previous prime is 550750679. The next prime is 550750769. The reversal of 550750691 is 196057055.

550750691 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 a de Polignac number, because none of the positive numbers 2^k-550750691 is a prime.

It is a super-4 number, since 4×550750691⁴ (a number of 36 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550750091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275375345 + 275375346.

It is an arithmetic number, because the mean of its divisors is an integer number (275375346).

Almost surely, 2^550750691 is an apocalyptic number.

550750691 is a deficient number, since it is larger than the sum of its proper divisors (1).

550750691 is an equidigital number, since it uses as much as digits as its factorization.

550750691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 550750691 is about 23468.0781275332. The cubic root of 550750691 is about 819.6938630170.

The spelling of 550750691 in words is "five hundred fifty million, seven hundred fifty thousand, six hundred ninety-one".