445052091 has 8 divisors (see below), whose sum is σ = 647348544. Its totient is φ = 269728520.

The previous prime is 445052087. The next prime is 445052117. The reversal of 445052091 is 190250544.

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 445052091 - 2² = 445052087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (445052011) 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, 6743181 + ... + 6743246.

It is an arithmetic number, because the mean of its divisors is an integer number (80918568).

Almost surely, 2^445052091 is an apocalyptic number.

445052091 is a deficient number, since it is larger than the sum of its proper divisors (202296453).

445052091 is a wasteful number, since it uses less digits than its factorization.

445052091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13486441.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 445052091 is about 21096.2577487098. The cubic root of 445052091 is about 763.4904608220.

The spelling of 445052091 in words is "four hundred forty-five million, fifty-two thousand, ninety-one".