497138085 has 24 divisors (see below), whose sum is σ = 866185944. Its totient is φ = 263761920.

The previous prime is 497138063. The next prime is 497138099. The reversal of 497138085 is 580831794.

497138085 is a `hidden beast` number, since 497 + 1 + 3 + 80 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 496710369 = 654^2 + 22287^2 .

It is not a de Polignac number, because 497138085 - 2⁸ = 497137829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 497138085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19936 + ... + 37305.

It is an arithmetic number, because the mean of its divisors is an integer number (36091081).

Almost surely, 2^497138085 is an apocalyptic number.

497138085 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

497138085 is a deficient number, since it is larger than the sum of its proper divisors (369047859).

497138085 is a wasteful number, since it uses less digits than its factorization.

497138085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57445 (or 57442 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 497138085 is about 22296.5935739072. The cubic root of 497138085 is about 792.1832918675.

The spelling of 497138085 in words is "four hundred ninety-seven million, one hundred thirty-eight thousand, eighty-five".