445172145 has 32 divisors (see below), whose sum is σ = 784750464. Its totient is φ = 213696000.

The previous prime is 445172131. The next prime is 445172159. The reversal of 445172145 is 541271544.

It is an interprime number because it is at equal distance from previous prime (445172131) and next prime (445172159).

It is not a de Polignac number, because 445172145 - 2⁸ = 445171889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3309 + ... + 30021.

It is an arithmetic number, because the mean of its divisors is an integer number (24523452).

Almost surely, 2^445172145 is an apocalyptic number.

It is an amenable number.

445172145 is a deficient number, since it is larger than the sum of its proper divisors (339578319).

445172145 is a wasteful number, since it uses less digits than its factorization.

445172145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26833.

The product of its digits is 22400, while the sum is 33.

The square root of 445172145 is about 21099.1029430163. The cubic root of 445172145 is about 763.5591058526.

The spelling of 445172145 in words is "four hundred forty-five million, one hundred seventy-two thousand, one hundred forty-five".