5811145 has 4 divisors (see below), whose sum is σ = 6973380. Its totient is φ = 4648912.

The previous prime is 5811121. The next prime is 5811163. The reversal of 5811145 is 5411185.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2699449 + 3111696 = 1643^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 5811145 - 2²¹ = 3713993 is a prime.

It is a super-2 number, since 2×5811145² = 67538812422050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581110 + ... + 581119.

It is an arithmetic number, because the mean of its divisors is an integer number (1743345).

Almost surely, 2^5811145 is an apocalyptic number.

It is an amenable number.

5811145 is a deficient number, since it is larger than the sum of its proper divisors (1162235).

5811145 is a wasteful number, since it uses less digits than its factorization.

5811145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162234.

The product of its digits is 800, while the sum is 25.

The square root of 5811145 is about 2410.6316599597. The cubic root of 5811145 is about 179.7851861277.

The spelling of 5811145 in words is "five million, eight hundred eleven thousand, one hundred forty-five".