5491613 has 2 divisors, whose sum is σ = 5491614. Its totient is φ = 5491612.

The previous prime is 5491609. The next prime is 5491631. The reversal of 5491613 is 3161945.

Together with next prime (5491631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5207524 + 284089 = 2282^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 5491613 - 2² = 5491609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5491313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2745806 + 2745807.

It is an arithmetic number, because the mean of its divisors is an integer number (2745807).

Almost surely, 2^5491613 is an apocalyptic number.

It is an amenable number.

5491613 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491613 is an equidigital number, since it uses as much as digits as its factorization.

5491613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 5491613 is about 2343.4190833054. The cubic root of 5491613 is about 176.4276467826.

The spelling of 5491613 in words is "five million, four hundred ninety-one thousand, six hundred thirteen".