4257556 has 12 divisors (see below), whose sum is σ = 7573300. Its totient is φ = 2093760.

The previous prime is 4257551. The next prime is 4257557. The reversal of 4257556 is 6557524.

It can be written as a sum of positive squares in 2 ways, for example, as 2353156 + 1904400 = 1534^2 + 1380^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4257551) 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, 8481 + ... + 8968.

Almost surely, 2^4257556 is an apocalyptic number.

It is an amenable number.

4257556 is a deficient number, since it is larger than the sum of its proper divisors (3315744).

4257556 is a wasteful number, since it uses less digits than its factorization.

4257556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17514 (or 17512 counting only the distinct ones).

The product of its digits is 42000, while the sum is 34.

The square root of 4257556 is about 2063.3845981784. The cubic root of 4257556 is about 162.0765273754.

Subtracting 4257556 from its reverse (6557524), we obtain a cube (2299968 = 132³).

The spelling of 4257556 in words is "four million, two hundred fifty-seven thousand, five hundred fifty-six".