5555491 has 2 divisors, whose sum is σ = 5555492. Its totient is φ = 5555490.

The previous prime is 5555461. The next prime is 5555497. The reversal of 5555491 is 1945555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5555491 is a prime.

It is not a weakly prime, because it can be changed into another prime (5555497) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777745 + 2777746.

It is an arithmetic number, because the mean of its divisors is an integer number (2777746).

Almost surely, 2^5555491 is an apocalyptic number.

5555491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555491 is an equidigital number, since it uses as much as digits as its factorization.

5555491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22500, while the sum is 34.

The square root of 5555491 is about 2357.0089096140. The cubic root of 5555491 is about 177.1090755226.

The spelling of 5555491 in words is "five million, five hundred fifty-five thousand, four hundred ninety-one".