496559921 has 12 divisors (see below), whose sum is σ = 587792436. Its totient is φ = 416692320.

The previous prime is 496559909. The next prime is 496559923. The reversal of 496559921 is 129955694.

It can be written as a sum of positive squares in 2 ways, for example, as 59290000 + 437269921 = 7700^2 + 20911^2 .

It is a de Polignac number, because none of the positive numbers 2^k-496559921 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 496559921.

It is not an unprimeable number, because it can be changed into a prime (496559923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156266 + ... + 159411.

It is an arithmetic number, because the mean of its divisors is an integer number (48982703).

Almost surely, 2^496559921 is an apocalyptic number.

It is an amenable number.

496559921 is a deficient number, since it is larger than the sum of its proper divisors (91232515).

496559921 is a wasteful number, since it uses less digits than its factorization.

496559921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315712 (or 315701 counting only the distinct ones).

The product of its digits is 874800, while the sum is 50.

The square root of 496559921 is about 22283.6245032086. The cubic root of 496559921 is about 791.8760737169.

The spelling of 496559921 in words is "four hundred ninety-six million, five hundred fifty-nine thousand, nine hundred twenty-one".