162648521 has 4 divisors (see below), whose sum is σ = 185884032. Its totient is φ = 139413012.

The previous prime is 162648511. The next prime is 162648523. The reversal of 162648521 is 125846261.

162648521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 125846261 = 41 ⋅3069421.

It is a cyclic number.

It is not a de Polignac number, because 162648521 - 2⁶ = 162648457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162648523) 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, 11617745 + ... + 11617758.

It is an arithmetic number, because the mean of its divisors is an integer number (46471008).

Almost surely, 2^162648521 is an apocalyptic number.

It is an amenable number.

162648521 is a deficient number, since it is larger than the sum of its proper divisors (23235511).

162648521 is an equidigital number, since it uses as much as digits as its factorization.

162648521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23235510.

The product of its digits is 23040, while the sum is 35.

The square root of 162648521 is about 12753.3729264066. The cubic root of 162648521 is about 545.8626419448.

The spelling of 162648521 in words is "one hundred sixty-two million, six hundred forty-eight thousand, five hundred twenty-one".