4557643 has 4 divisors (see below), whose sum is σ = 4585768. Its totient is φ = 4529520.

The previous prime is 4557607. The next prime is 4557673. The reversal of 4557643 is 3467554.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3467554 = 2 ⋅1733777.

It is a cyclic number.

It is not a de Polignac number, because 4557643 - 2¹⁷ = 4426571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4557599 and 4557608.

It is not an unprimeable number, because it can be changed into a prime (4557673) 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 3 ways as a sum of consecutive naturals, for example, 13818 + ... + 14143.

It is an arithmetic number, because the mean of its divisors is an integer number (1146442).

Almost surely, 2^4557643 is an apocalyptic number.

4557643 is a deficient number, since it is larger than the sum of its proper divisors (28125).

4557643 is a wasteful number, since it uses less digits than its factorization.

4557643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28124.

The product of its digits is 50400, while the sum is 34.

The square root of 4557643 is about 2134.8636958832. The cubic root of 4557643 is about 165.7983107161.

The spelling of 4557643 in words is "four million, five hundred fifty-seven thousand, six hundred forty-three".