162256961 has 4 divisors (see below), whose sum is σ = 162607872. Its totient is φ = 161906052.

The previous prime is 162256937. The next prime is 162256981. The reversal of 162256961 is 169652261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 169652261 = 821 ⋅206641.

It is a cyclic number.

It is not a de Polignac number, because 162256961 - 2¹⁰ = 162255937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162256901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174761 + ... + 175686.

It is an arithmetic number, because the mean of its divisors is an integer number (40651968).

Almost surely, 2^162256961 is an apocalyptic number.

It is an amenable number.

162256961 is a deficient number, since it is larger than the sum of its proper divisors (350911).

162256961 is an equidigital number, since it uses as much as digits as its factorization.

162256961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350910.

The product of its digits is 38880, while the sum is 38.

The square root of 162256961 is about 12738.0124430776. The cubic root of 162256961 is about 545.4242534449.

The spelling of 162256961 in words is "one hundred sixty-two million, two hundred fifty-six thousand, nine hundred sixty-one".