497920161 has 4 divisors (see below), whose sum is σ = 663893552. Its totient is φ = 331946772.

The previous prime is 497920151. The next prime is 497920223. The reversal of 497920161 is 161029794.

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 497920161 - 2⁶ = 497920097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (497920141) 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, 82986691 + ... + 82986696.

It is an arithmetic number, because the mean of its divisors is an integer number (165973388).

Almost surely, 2^497920161 is an apocalyptic number.

It is an amenable number.

497920161 is a deficient number, since it is larger than the sum of its proper divisors (165973391).

497920161 is a wasteful number, since it uses less digits than its factorization.

497920161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165973390.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 497920161 is about 22314.1246971509. The cubic root of 497920161 is about 792.5984836494.

The spelling of 497920161 in words is "four hundred ninety-seven million, nine hundred twenty thousand, one hundred sixty-one".