497285581 has 16 divisors (see below), whose sum is σ = 567831600. Its totient is φ = 431428608.

The previous prime is 497285567. The next prime is 497285623. The reversal of 497285581 is 185582794.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 396900 + 496888681 = 630^2 + 22291^2 .

It is not a de Polignac number, because 497285581 - 2⁵ = 497285549 is a prime.

It is a super-3 number, since 3×497285581³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497285501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 244075 + ... + 246103.

It is an arithmetic number, because the mean of its divisors is an integer number (35489475).

Almost surely, 2^497285581 is an apocalyptic number.

It is an amenable number.

497285581 is a deficient number, since it is larger than the sum of its proper divisors (70546019).

497285581 is a wasteful number, since it uses less digits than its factorization.

497285581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168.

The product of its digits is 806400, while the sum is 49.

The square root of 497285581 is about 22299.9009190624. The cubic root of 497285581 is about 792.2616284617.

The spelling of 497285581 in words is "four hundred ninety-seven million, two hundred eighty-five thousand, five hundred eighty-one".