5549591 has 2 divisors, whose sum is σ = 5549592. Its totient is φ = 5549590.

The previous prime is 5549587. The next prime is 5549611. The reversal of 5549591 is 1959455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5549591 - 2² = 5549587 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5549561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2774795 + 2774796.

It is an arithmetic number, because the mean of its divisors is an integer number (2774796).

Almost surely, 2^5549591 is an apocalyptic number.

5549591 is a deficient number, since it is larger than the sum of its proper divisors (1).

5549591 is an equidigital number, since it uses as much as digits as its factorization.

5549591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 38.

The square root of 5549591 is about 2355.7569908630. The cubic root of 5549591 is about 177.0463559731.

The spelling of 5549591 in words is "five million, five hundred forty-nine thousand, five hundred ninety-one".