4855661 has 4 divisors (see below), whose sum is σ = 4935324. Its totient is φ = 4776000.

The previous prime is 4855651. The next prime is 4855667. The reversal of 4855661 is 1665584.

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 42025 + 4813636 = 205^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 4855661 - 2⁶ = 4855597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4855667) 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, 39740 + ... + 39861.

It is an arithmetic number, because the mean of its divisors is an integer number (1233831).

Almost surely, 2^4855661 is an apocalyptic number.

It is an amenable number.

4855661 is a deficient number, since it is larger than the sum of its proper divisors (79663).

4855661 is an equidigital number, since it uses as much as digits as its factorization.

4855661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79662.

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

The square root of 4855661 is about 2203.5564435703. The cubic root of 4855661 is about 169.3360608643.

The spelling of 4855661 in words is "four million, eight hundred fifty-five thousand, six hundred sixty-one".