165454513 has 4 divisors (see below), whose sum is σ = 189090880. Its totient is φ = 141818148.

The previous prime is 165454507. The next prime is 165454559. The reversal of 165454513 is 315454561.

165454513 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: 315454561 = 263 ⋅1199447.

It is a cyclic number.

It is not a de Polignac number, because 165454513 - 2⁵ = 165454481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165454313) 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, 11818173 + ... + 11818186.

It is an arithmetic number, because the mean of its divisors is an integer number (47272720).

Almost surely, 2^165454513 is an apocalyptic number.

It is an amenable number.

165454513 is a deficient number, since it is larger than the sum of its proper divisors (23636367).

165454513 is an equidigital number, since it uses as much as digits as its factorization.

165454513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23636366.

The product of its digits is 36000, while the sum is 34.

The square root of 165454513 is about 12862.9123063169. The cubic root of 165454513 is about 548.9838128921.

The spelling of 165454513 in words is "one hundred sixty-five million, four hundred fifty-four thousand, five hundred thirteen".