4557557 has 2 divisors, whose sum is σ = 4557558. Its totient is φ = 4557556.

The previous prime is 4557533. The next prime is 4557559. The reversal of 4557557 is 7557554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4165681 + 391876 = 2041^2 + 626^2 .

It is a cyclic number.

It is not a de Polignac number, because 4557557 - 2¹⁶ = 4492021 is a prime.

Together with 4557559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4557557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4557559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2278778 + 2278779.

It is an arithmetic number, because the mean of its divisors is an integer number (2278779).

Almost surely, 2^4557557 is an apocalyptic number.

It is an amenable number.

4557557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4557557 is an equidigital number, since it uses as much as digits as its factorization.

4557557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122500, while the sum is 38.

The square root of 4557557 is about 2134.8435539870. The cubic root of 4557557 is about 165.7972678712.

The spelling of 4557557 in words is "four million, five hundred fifty-seven thousand, five hundred fifty-seven".