448161751 has 4 divisors (see below), whose sum is σ = 448317792. Its totient is φ = 448005712.

The previous prime is 448161743. The next prime is 448161757. The reversal of 448161751 is 157161844.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 448161751 - 2³ = 448161743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 448161751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448161757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73630 + ... + 79483.

It is an arithmetic number, because the mean of its divisors is an integer number (112079448).

Almost surely, 2^448161751 is an apocalyptic number.

448161751 is a deficient number, since it is larger than the sum of its proper divisors (156041).

448161751 is a wasteful number, since it uses less digits than its factorization.

448161751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156040.

The product of its digits is 26880, while the sum is 37.

The square root of 448161751 is about 21169.8311519010. The cubic root of 448161751 is about 765.2645508770.

The spelling of 448161751 in words is "four hundred forty-eight million, one hundred sixty-one thousand, seven hundred fifty-one".