4145445 has 16 divisors (see below), whose sum is σ = 7369920. Its totient is φ = 2210832.

The previous prime is 4145423. The next prime is 4145459. The reversal of 4145445 is 5445414.

4145445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4145445 - 2⁸ = 4145189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15219 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (460620).

Almost surely, 2^4145445 is an apocalyptic number.

4145445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4145445 is a deficient number, since it is larger than the sum of its proper divisors (3224475).

4145445 is a wasteful number, since it uses less digits than its factorization.

4145445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30721 (or 30715 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 4145445 is about 2036.0365910268. The cubic root of 4145445 is about 160.6412417275.

The spelling of 4145445 in words is "four million, one hundred forty-five thousand, four hundred forty-five".