555494 has 4 divisors (see below), whose sum is σ = 833244. Its totient is φ = 277746.

The previous prime is 555491. The next prime is 555521. The reversal of 555494 is 494555.

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: 494555 = 5 ⋅98911.

It is a self number, because there is not a number n which added to its sum of digits gives 555494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555491) 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 as a sum of consecutive naturals, namely, 138872 + ... + 138875.

It is an arithmetic number, because the mean of its divisors is an integer number (208311).

2⁵⁵⁵⁴⁹⁴ is an apocalyptic number.

555494 is a deficient number, since it is larger than the sum of its proper divisors (277750).

555494 is a wasteful number, since it uses less digits than its factorization.

555494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277749.

The product of its digits is 18000, while the sum is 32.

The square root of 555494 is about 745.3146986341. The cubic root of 555494 is about 82.2040328511.

It can be divided in two parts, 555 and 494, that multiplied together give a triangular number (274170 = T₇₄₀).

The spelling of 555494 in words is "five hundred fifty-five thousand, four hundred ninety-four".