162257489 has 4 divisors (see below), whose sum is σ = 165709824. Its totient is φ = 158805156.

The previous prime is 162257471. The next prime is 162257497. The reversal of 162257489 is 984752261.

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 162257489 - 2¹² = 162253393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162227489) 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, 1726097 + ... + 1726190.

It is an arithmetic number, because the mean of its divisors is an integer number (41427456).

Almost surely, 2^162257489 is an apocalyptic number.

It is an amenable number.

162257489 is a deficient number, since it is larger than the sum of its proper divisors (3452335).

162257489 is an equidigital number, since it uses as much as digits as its factorization.

162257489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452334.

The product of its digits is 241920, while the sum is 44.

The square root of 162257489 is about 12738.0331684291. The cubic root of 162257489 is about 545.4248450655.

The spelling of 162257489 in words is "one hundred sixty-two million, two hundred fifty-seven thousand, four hundred eighty-nine".