4866557 has 2 divisors, whose sum is σ = 4866558. Its totient is φ = 4866556.

The previous prime is 4866551. The next prime is 4866559. The reversal of 4866557 is 7556684.

4866557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4866436 + 121 = 2206^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 4866557 - 2⁴ = 4866541 is a prime.

Together with 4866559, 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 (4866551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2433278 + 2433279.

It is an arithmetic number, because the mean of its divisors is an integer number (2433279).

Almost surely, 2^4866557 is an apocalyptic number.

It is an amenable number.

4866557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4866557 is an equidigital number, since it uses as much as digits as its factorization.

4866557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 4866557 is about 2206.0274250335. The cubic root of 4866557 is about 169.4626284127.

The spelling of 4866557 in words is "four million, eight hundred sixty-six thousand, five hundred fifty-seven".