497681281 has 4 divisors (see below), whose sum is σ = 497730352. Its totient is φ = 497632212.

The previous prime is 497681279. The next prime is 497681333. The reversal of 497681281 is 182186794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 182186794 = 2 ⋅91093397.

It is a cyclic number.

It is not a de Polignac number, because 497681281 - 2¹ = 497681279 is a prime.

It is a super-2 number, since 2×497681281² = 495373314915601922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497681201) 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, 3051 + ... + 31696.

It is an arithmetic number, because the mean of its divisors is an integer number (124432588).

Almost surely, 2^497681281 is an apocalyptic number.

It is an amenable number.

497681281 is a deficient number, since it is larger than the sum of its proper divisors (49071).

497681281 is a wasteful number, since it uses less digits than its factorization.

497681281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49070.

The product of its digits is 193536, while the sum is 46.

The square root of 497681281 is about 22308.7713915401. The cubic root of 497681281 is about 792.4717121795.

The spelling of 497681281 in words is "four hundred ninety-seven million, six hundred eighty-one thousand, two hundred eighty-one".