4172445 has 32 divisors (see below), whose sum is σ = 7664640. Its totient is φ = 2151360.

The previous prime is 4172431. The next prime is 4172471. The reversal of 4172445 is 5442714.

4172445 is a `hidden beast` number, since 417 + 244 + 5 = 666.

It is not a de Polignac number, because 4172445 - 2⁹ = 4171933 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3687 + ... + 4683.

It is an arithmetic number, because the mean of its divisors is an integer number (239520).

Almost surely, 2^4172445 is an apocalyptic number.

4172445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4172445 is a deficient number, since it is larger than the sum of its proper divisors (3492195).

4172445 is a wasteful number, since it uses less digits than its factorization.

4172445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042 (or 1036 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 4172445 is about 2042.6563587642. The cubic root of 4172445 is about 160.9892486680.

The spelling of 4172445 in words is "four million, one hundred seventy-two thousand, four hundred forty-five".