548226691 has 2 divisors, whose sum is σ = 548226692. Its totient is φ = 548226690.

The previous prime is 548226617. The next prime is 548226709. The reversal of 548226691 is 196622845.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 548226691 - 2⁷ = 548226563 is a prime.

It is not a weakly prime, because it can be changed into another prime (548226611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274113345 + 274113346.

It is an arithmetic number, because the mean of its divisors is an integer number (274113346).

Almost surely, 2^548226691 is an apocalyptic number.

548226691 is a deficient number, since it is larger than the sum of its proper divisors (1).

548226691 is an equidigital number, since it uses as much as digits as its factorization.

548226691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 548226691 is about 23414.2412006027. The cubic root of 548226691 is about 818.4397711608.

The spelling of 548226691 in words is "five hundred forty-eight million, two hundred twenty-six thousand, six hundred ninety-one".