497781583 has 4 divisors (see below), whose sum is σ = 536072488. Its totient is φ = 459490680.

The previous prime is 497781577. The next prime is 497781587. The reversal of 497781583 is 385187794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497781583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 497781583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497781587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19145433 + ... + 19145458.

It is an arithmetic number, because the mean of its divisors is an integer number (134018122).

Almost surely, 2^497781583 is an apocalyptic number.

497781583 is a deficient number, since it is larger than the sum of its proper divisors (38290905).

497781583 is a wasteful number, since it uses less digits than its factorization.

497781583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38290904.

The product of its digits is 1693440, while the sum is 52.

The square root of 497781583 is about 22311.0193178169. The cubic root of 497781583 is about 792.5249464892.

The spelling of 497781583 in words is "four hundred ninety-seven million, seven hundred eighty-one thousand, five hundred eighty-three".