492161 has 4 divisors (see below), whose sum is σ = 494592. Its totient is φ = 489732.

The previous prime is 492113. The next prime is 492227. The reversal of 492161 is 161294.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 492161 - 2¹⁰ = 491137 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 492161.

It is not an unprimeable number, because it can be changed into a prime (492061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (123648).

2⁴⁹²¹⁶¹ is an apocalyptic number.

It is an amenable number.

492161 is a deficient number, since it is larger than the sum of its proper divisors (2431).

492161 is a wasteful number, since it uses less digits than its factorization.

492161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430.

The product of its digits is 432, while the sum is 23.

The square root of 492161 is about 701.5418733048. The cubic root of 492161 is about 78.9530779418.

The spelling of 492161 in words is "four hundred ninety-two thousand, one hundred sixty-one".