445041521 has 8 divisors (see below), whose sum is σ = 471928680. Its totient is φ = 418233088.

The previous prime is 445041517. The next prime is 445041539. The reversal of 445041521 is 125140544.

It can be written as a sum of positive squares in 4 ways, for example, as 181953121 + 263088400 = 13489^2 + 16220^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 445041521 - 2² = 445041517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445041551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7826 + ... + 30843.

It is an arithmetic number, because the mean of its divisors is an integer number (58991085).

Almost surely, 2^445041521 is an apocalyptic number.

It is an amenable number.

445041521 is a deficient number, since it is larger than the sum of its proper divisors (26887159).

445041521 is a wasteful number, since it uses less digits than its factorization.

445041521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39363.

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

The square root of 445041521 is about 21096.0072288573. The cubic root of 445041521 is about 763.4844164674.

The spelling of 445041521 in words is "four hundred forty-five million, forty-one thousand, five hundred twenty-one".