162491 has 8 divisors (see below), whose sum is σ = 188160. Its totient is φ = 137448.

The previous prime is 162473. The next prime is 162493. The reversal of 162491 is 194261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162491 is a prime.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 162491.

It is not an unprimeable number, because it can be changed into a prime (162493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2¹⁶²⁴⁹¹ is an apocalyptic number.

162491 is a deficient number, since it is larger than the sum of its proper divisors (25669).

162491 is a wasteful number, since it uses less digits than its factorization.

162491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313.

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

The square root of 162491 is about 403.1017241342. The cubic root of 162491 is about 54.5686366949.

The spelling of 162491 in words is "one hundred sixty-two thousand, four hundred ninety-one".