4455445 has 32 divisors (see below), whose sum is σ = 6158592. Its totient is φ = 3075072.

The previous prime is 4455403. The next prime is 4455461. The reversal of 4455445 is 5445544.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4455445 - 2¹³ = 4447253 is a prime.

It is a Duffinian 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, 84039 + ... + 84091.

It is an arithmetic number, because the mean of its divisors is an integer number (192456).

Almost surely, 2^4455445 is an apocalyptic number.

4455445 is the 1219-th octagonal number.

It is an amenable number.

4455445 is a deficient number, since it is larger than the sum of its proper divisors (1703147).

4455445 is a wasteful number, since it uses less digits than its factorization.

4455445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141.

The product of its digits is 32000, while the sum is 31.

The square root of 4455445 is about 2110.7925051980. The cubic root of 4455445 is about 164.5496750413.

Subtracting 4455445 from its reverse (5445544), we obtain a palindrome (990099).

It can be divided in two parts, 4455 and 445, that added together give a square (4900 = 70²).

The spelling of 4455445 in words is "four million, four hundred fifty-five thousand, four hundred forty-five".