492564385 has 4 divisors (see below), whose sum is σ = 591077268. Its totient is φ = 394051504.

The previous prime is 492564377. The next prime is 492564403. The reversal of 492564385 is 583465294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583465294 = 2 ⋅291732647.

It can be written as a sum of positive squares in 2 ways, for example, as 169859089 + 322705296 = 13033^2 + 17964^2 .

It is a cyclic number.

It is not a de Polignac number, because 492564385 - 2³ = 492564377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49256434 + ... + 49256443.

It is an arithmetic number, because the mean of its divisors is an integer number (147769317).

Almost surely, 2^492564385 is an apocalyptic number.

It is an amenable number.

492564385 is a deficient number, since it is larger than the sum of its proper divisors (98512883).

492564385 is an equidigital number, since it uses as much as digits as its factorization.

492564385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98512882.

The product of its digits is 1036800, while the sum is 46.

The square root of 492564385 is about 22193.7915868380. The cubic root of 492564385 is about 789.7464255864.

Subtracting 492564385 from its reverse (583465294), we obtain a palindrome (90900909).

The spelling of 492564385 in words is "four hundred ninety-two million, five hundred sixty-four thousand, three hundred eighty-five".