445421051 has 8 divisors (see below), whose sum is σ = 460118400. Its totient is φ = 430744320.

The previous prime is 445421023. The next prime is 445421057. The reversal of 445421051 is 150124544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445421051 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 445421051.

It is not an unprimeable number, because it can be changed into a prime (445421057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47435 + ... + 56043.

It is an arithmetic number, because the mean of its divisors is an integer number (57514800).

Almost surely, 2^445421051 is an apocalyptic number.

445421051 is a deficient number, since it is larger than the sum of its proper divisors (14697349).

445421051 is a wasteful number, since it uses less digits than its factorization.

445421051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10309.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 445421051 is about 21105.0006159678. Note that the first 3 decimals coincide. The cubic root of 445421051 is about 763.7013871661.

Subtracting from 445421051 its sum of digits (26), we obtain a square (445421025 = 21105²).

Adding to 445421051 its reverse (150124544), we get a palindrome (595545595).

The spelling of 445421051 in words is "four hundred forty-five million, four hundred twenty-one thousand, fifty-one".