6111491 has 4 divisors (see below), whose sum is σ = 6377232. Its totient is φ = 5845752.

The previous prime is 6111463. The next prime is 6111493. The reversal of 6111491 is 1941116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6111491 - 2²² = 1917187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 265717 = 6111491 / (6 + 1 + 1 + 1 + 4 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6111493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132836 + ... + 132881.

It is an arithmetic number, because the mean of its divisors is an integer number (1594308).

Almost surely, 2^6111491 is an apocalyptic number.

6111491 is a deficient number, since it is larger than the sum of its proper divisors (265741).

6111491 is a wasteful number, since it uses less digits than its factorization.

6111491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265740.

The product of its digits is 216, while the sum is 23.

The square root of 6111491 is about 2472.1429974821. The cubic root of 6111491 is about 182.8306733973.

The spelling of 6111491 in words is "six million, one hundred eleven thousand, four hundred ninety-one".