445351121 has 4 divisors (see below), whose sum is σ = 451623744. Its totient is φ = 439078500.

The previous prime is 445351087. The next prime is 445351133. The reversal of 445351121 is 121153544.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445351121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445351171) 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, 3136205 + ... + 3136346.

It is an arithmetic number, because the mean of its divisors is an integer number (112905936).

Almost surely, 2^445351121 is an apocalyptic number.

It is an amenable number.

445351121 is a deficient number, since it is larger than the sum of its proper divisors (6272623).

445351121 is an equidigital number, since it uses as much as digits as its factorization.

445351121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6272622.

The product of its digits is 2400, while the sum is 26.

The square root of 445351121 is about 21103.3438345680. The cubic root of 445351121 is about 763.6614186666.

The spelling of 445351121 in words is "four hundred forty-five million, three hundred fifty-one thousand, one hundred twenty-one".