5617891 has 4 divisors (see below), whose sum is σ = 5627272. Its totient is φ = 5608512.

The previous prime is 5617889. The next prime is 5617897. The reversal of 5617891 is 1987165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1987165 = 5 ⋅397433.

It is a cyclic number.

It is not a de Polignac number, because 5617891 - 2¹ = 5617889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5617891.

It is not an unprimeable number, because it can be changed into a prime (5617897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3726 + ... + 5011.

It is an arithmetic number, because the mean of its divisors is an integer number (1406818).

Almost surely, 2^5617891 is an apocalyptic number.

5617891 is a deficient number, since it is larger than the sum of its proper divisors (9381).

5617891 is an equidigital number, since it uses as much as digits as its factorization.

5617891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9380.

The product of its digits is 15120, while the sum is 37.

The square root of 5617891 is about 2370.2090625090. The cubic root of 5617891 is about 177.7697122932.

The spelling of 5617891 in words is "five million, six hundred seventeen thousand, eight hundred ninety-one".