494545 has 4 divisors (see below), whose sum is σ = 593460. Its totient is φ = 395632.

The previous prime is 494539. The next prime is 494561. The reversal of 494545 is 545494.

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

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 173056 = 567^2 + 416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494545 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 49450 + ... + 49459.

It is an arithmetic number, because the mean of its divisors is an integer number (148365).

2⁴⁹⁴⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

494545 is a deficient number, since it is larger than the sum of its proper divisors (98915).

494545 is an equidigital number, since it uses as much as digits as its factorization.

494545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98914.

The product of its digits is 14400, while the sum is 31.

The square root of 494545 is about 703.2389352133. The cubic root of 494545 is about 79.0803540685.

It can be divided in two parts, 4 and 94545, that added together give a palindrome (94549).

The spelling of 494545 in words is "four hundred ninety-four thousand, five hundred forty-five".