4511861 has 8 divisors (see below), whose sum is σ = 4645344. Its totient is φ = 4379760.

The previous prime is 4511827. The next prime is 4511867. The reversal of 4511861 is 1681154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4511861 - 2¹⁸ = 4249717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4511861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4511867) 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 7 ways as a sum of consecutive naturals, for example, 13466 + ... + 13796.

It is an arithmetic number, because the mean of its divisors is an integer number (580668).

Almost surely, 2^4511861 is an apocalyptic number.

It is an amenable number.

4511861 is a deficient number, since it is larger than the sum of its proper divisors (133483).

4511861 is a wasteful number, since it uses less digits than its factorization.

4511861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its digits is 960, while the sum is 26.

The square root of 4511861 is about 2124.1141683064. The cubic root of 4511861 is about 165.2412876301.

The spelling of 4511861 in words is "four million, five hundred eleven thousand, eight hundred sixty-one".