553478 has 4 divisors (see below), whose sum is σ = 830220. Its totient is φ = 276738.

The previous prime is 553471. The next prime is 553481. The reversal of 553478 is 874355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553471) by changing a digit.

553478 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138368 + ... + 138371.

It is an arithmetic number, because the mean of its divisors is an integer number (207555).

2⁵⁵³⁴⁷⁸ is an apocalyptic number.

553478 is a deficient number, since it is larger than the sum of its proper divisors (276742).

553478 is a wasteful number, since it uses less digits than its factorization.

553478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276741.

The product of its digits is 16800, while the sum is 32.

The square root of 553478 is about 743.9610204843. The cubic root of 553478 is about 82.1044672893.

It can be divided in two parts, 55347 and 8, that added together give a palindrome (55355).

The spelling of 553478 in words is "five hundred fifty-three thousand, four hundred seventy-eight".