444521051 has 4 divisors (see below), whose sum is σ = 478714992. Its totient is φ = 410327112.

The previous prime is 444521047. The next prime is 444521053. The reversal of 444521051 is 150125444.

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

It is not a de Polignac number, because 444521051 - 2² = 444521047 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 444521051.

It is not an unprimeable number, because it can be changed into a prime (444521053) 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, 17096951 + ... + 17096976.

It is an arithmetic number, because the mean of its divisors is an integer number (119678748).

Almost surely, 2^444521051 is an apocalyptic number.

444521051 is a deficient number, since it is larger than the sum of its proper divisors (34193941).

444521051 is a wasteful number, since it uses less digits than its factorization.

444521051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34193940.

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

The square root of 444521051 is about 21083.6678734987. The cubic root of 444521051 is about 763.1866721576.

Adding to 444521051 its reverse (150125444), we get a palindrome (594646495).

The spelling of 444521051 in words is "four hundred forty-four million, five hundred twenty-one thousand, fifty-one".