5611491 has 8 divisors (see below), whose sum is σ = 8313360. Its totient is φ = 3740976.

The previous prime is 5611477. The next prime is 5611493. The reversal of 5611491 is 1941165.

5611491 is a `hidden beast` number, since 5 + 611 + 49 + 1 = 666.

It is not a de Polignac number, because 5611491 - 2¹⁰ = 5610467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 207833 = 5611491 / (5 + 6 + 1 + 1 + 4 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (5611493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103890 + ... + 103943.

It is an arithmetic number, because the mean of its divisors is an integer number (1039170).

Almost surely, 2^5611491 is an apocalyptic number.

5611491 is a deficient number, since it is larger than the sum of its proper divisors (2701869).

5611491 is a wasteful number, since it uses less digits than its factorization.

5611491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207842 (or 207836 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 5611491 is about 2368.8585859017. The cubic root of 5611491 is about 177.7021805171.

The spelling of 5611491 in words is "five million, six hundred eleven thousand, four hundred ninety-one".