4565861 has 2 divisors, whose sum is σ = 4565862. Its totient is φ = 4565860.

The previous prime is 4565851. The next prime is 4565863. The reversal of 4565861 is 1685654.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3876961 + 688900 = 1969^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 4565861 - 2¹⁴ = 4549477 is a prime.

Together with 4565863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4565863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2282930 + 2282931.

It is an arithmetic number, because the mean of its divisors is an integer number (2282931).

Almost surely, 2^4565861 is an apocalyptic number.

It is an amenable number.

4565861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4565861 is an equidigital number, since it uses as much as digits as its factorization.

4565861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 4565861 is about 2136.7875420827. The cubic root of 4565861 is about 165.8979025738.

The spelling of 4565861 in words is "four million, five hundred sixty-five thousand, eight hundred sixty-one".