445004057 has 4 divisors (see below), whose sum is σ = 448942260. Its totient is φ = 441065856.

The previous prime is 445004051. The next prime is 445004071. The reversal of 445004057 is 750400544.

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

It can be written as a sum of positive squares in 2 ways, for example, as 222278281 + 222725776 = 14909^2 + 14924^2 .

It is a cyclic number.

It is not a de Polignac number, because 445004057 - 2⁴ = 445004041 is a prime.

It is a super-2 number, since 2×445004057² = 396057221492918498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445004051) 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, 1968932 + ... + 1969157.

It is an arithmetic number, because the mean of its divisors is an integer number (112235565).

Almost surely, 2^445004057 is an apocalyptic number.

It is an amenable number.

445004057 is a deficient number, since it is larger than the sum of its proper divisors (3938203).

445004057 is a wasteful number, since it uses less digits than its factorization.

445004057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938202.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 445004057 is about 21095.1192696320. The cubic root of 445004057 is about 763.4629922620.

The spelling of 445004057 in words is "four hundred forty-five million, four thousand, fifty-seven".