445057547 has 4 divisors (see below), whose sum is σ = 485517336. Its totient is φ = 404597760.

The previous prime is 445057531. The next prime is 445057549. The reversal of 445057547 is 745750544.

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

It is a cyclic number.

It is not a de Polignac number, because 445057547 - 2⁴ = 445057531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445057549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20229878 + ... + 20229899.

It is an arithmetic number, because the mean of its divisors is an integer number (121379334).

Almost surely, 2^445057547 is an apocalyptic number.

445057547 is a deficient number, since it is larger than the sum of its proper divisors (40459789).

445057547 is a wasteful number, since it uses less digits than its factorization.

445057547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40459788.

The product of its (nonzero) digits is 392000, while the sum is 41.

The square root of 445057547 is about 21096.3870603476. The cubic root of 445057547 is about 763.4935807467.

The spelling of 445057547 in words is "four hundred forty-five million, fifty-seven thousand, five hundred forty-seven".