445254121 has 16 divisors (see below), whose sum is σ = 492085440. Its totient is φ = 400276800.

The previous prime is 445254109. The next prime is 445254193. The reversal of 445254121 is 121452544.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445254121 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 445254121.

It is not an unprimeable number, because it can be changed into a prime (445254221) 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 15 ways as a sum of consecutive naturals, for example, 233271 + ... + 235171.

It is an arithmetic number, because the mean of its divisors is an integer number (30755340).

Almost surely, 2^445254121 is an apocalyptic number.

It is an amenable number.

445254121 is a deficient number, since it is larger than the sum of its proper divisors (46831319).

445254121 is a wasteful number, since it uses less digits than its factorization.

445254121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376.

The product of its digits is 6400, while the sum is 28.

The square root of 445254121 is about 21101.0454954251. The cubic root of 445254121 is about 763.6059713781.

The spelling of 445254121 in words is "four hundred forty-five million, two hundred fifty-four thousand, one hundred twenty-one".