556454 has 4 divisors (see below), whose sum is σ = 834684. Its totient is φ = 278226.

The previous prime is 556441. The next prime is 556459. The reversal of 556454 is 454655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454655 = 5 ⋅90931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556459) by changing a digit.

556454 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 139112 + ... + 139115.

It is an arithmetic number, because the mean of its divisors is an integer number (208671).

2⁵⁵⁶⁴⁵⁴ is an apocalyptic number.

556454 is a deficient number, since it is larger than the sum of its proper divisors (278230).

556454 is a wasteful number, since it uses less digits than its factorization.

556454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278229.

The product of its digits is 12000, while the sum is 29.

The square root of 556454 is about 745.9584438828. The cubic root of 556454 is about 82.2513603677.

The spelling of 556454 in words is "five hundred fifty-six thousand, four hundred fifty-four".