5497891 has 4 divisors (see below), whose sum is σ = 6283312. Its totient is φ = 4712472.

The previous prime is 5497889. The next prime is 5497901. The reversal of 5497891 is 1987945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1987945 = 5 ⋅397589.

It is a cyclic number.

It is not a de Polignac number, because 5497891 - 2¹ = 5497889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5497861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392700 + ... + 392713.

It is an arithmetic number, because the mean of its divisors is an integer number (1570828).

Almost surely, 2^5497891 is an apocalyptic number.

5497891 is a deficient number, since it is larger than the sum of its proper divisors (785421).

5497891 is an equidigital number, since it uses as much as digits as its factorization.

5497891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785420.

The product of its digits is 90720, while the sum is 43.

The square root of 5497891 is about 2344.7581964885. The cubic root of 5497891 is about 176.4948517466.

The spelling of 5497891 in words is "five million, four hundred ninety-seven thousand, eight hundred ninety-one".