492591657 has 4 divisors (see below), whose sum is σ = 656788880. Its totient is φ = 328394436.

The previous prime is 492591647. The next prime is 492591661. The reversal of 492591657 is 756195294.

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.

It is not a de Polignac number, because 492591657 - 2⁴ = 492591641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492591607) 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, 82098607 + ... + 82098612.

It is an arithmetic number, because the mean of its divisors is an integer number (164197220).

Almost surely, 2^492591657 is an apocalyptic number.

It is an amenable number.

492591657 is a deficient number, since it is larger than the sum of its proper divisors (164197223).

492591657 is a wasteful number, since it uses less digits than its factorization.

492591657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164197222.

The product of its digits is 680400, while the sum is 48.

The square root of 492591657 is about 22194.4059843917. The cubic root of 492591657 is about 789.7610007145.

The spelling of 492591657 in words is "four hundred ninety-two million, five hundred ninety-one thousand, six hundred fifty-seven".