491496523 has 16 divisors (see below), whose sum is σ = 571352320. Its totient is φ = 414079776.

The previous prime is 491496521. The next prime is 491496557. The reversal of 491496523 is 325694194.

It is a cyclic number.

It is not a de Polignac number, because 491496523 - 2¹ = 491496521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491496523.

It is not an unprimeable number, because it can be changed into a prime (491496521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289465 + ... + 291157.

It is an arithmetic number, because the mean of its divisors is an integer number (35709520).

Almost surely, 2^491496523 is an apocalyptic number.

491496523 is a deficient number, since it is larger than the sum of its proper divisors (79855797).

491496523 is a wasteful number, since it uses less digits than its factorization.

491496523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386.

The product of its digits is 233280, while the sum is 43.

The square root of 491496523 is about 22169.7208597673. The cubic root of 491496523 is about 789.1752986419.

The spelling of 491496523 in words is "four hundred ninety-one million, four hundred ninety-six thousand, five hundred twenty-three".