494803561 has 4 divisors (see below), whose sum is σ = 565489792. Its totient is φ = 424117332.

The previous prime is 494803549. The next prime is 494803571. The reversal of 494803561 is 165308494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 494803561 - 2¹⁷ = 494672489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494803511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35343105 + ... + 35343118.

It is an arithmetic number, because the mean of its divisors is an integer number (141372448).

Almost surely, 2^494803561 is an apocalyptic number.

It is an amenable number.

494803561 is a deficient number, since it is larger than the sum of its proper divisors (70686231).

494803561 is an equidigital number, since it uses as much as digits as its factorization.

494803561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70686230.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 494803561 is about 22244.1803849906. The cubic root of 494803561 is about 790.9413342332.

The spelling of 494803561 in words is "four hundred ninety-four million, eight hundred three thousand, five hundred sixty-one".