497645520 has 80 divisors (see below), whose sum is σ = 1552287552. Its totient is φ = 131880960.

The previous prime is 497645509. The next prime is 497645527. The reversal of 497645520 is 25546794.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497645527) 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 15 ways as a sum of consecutive naturals, for example, 32760 + ... + 45480.

Almost surely, 2^497645520 is an apocalyptic number.

497645520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497645520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776143776).

497645520 is an abundant number, since it is smaller than the sum of its proper divisors (1054642032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

497645520 is a wasteful number, since it uses less digits than its factorization.

497645520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12900 (or 12894 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 497645520 is about 22307.9698762572. The cubic root of 497645520 is about 792.4527306473.

The spelling of 497645520 in words is "four hundred ninety-seven million, six hundred forty-five thousand, five hundred twenty".