4045545 has 40 divisors (see below), whose sum is σ = 8293824. Its totient is φ = 1848096.

The previous prime is 4045523. The next prime is 4045549. The reversal of 4045545 is 5455404.

4045545 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 4045545 - 2⁷ = 4045417 is a prime.

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

It is a Curzon number.

4045545 is a lucky number.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (4045549) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2122 + ... + 3548.

Almost surely, 2^4045545 is an apocalyptic number.

4045545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4045545 is an abundant number, since it is smaller than the sum of its proper divisors (4248279).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4045545 is a wasteful number, since it uses less digits than its factorization.

4045545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 4045545 is about 2011.3540215487. The cubic root of 4045545 is about 159.3403177127.

The spelling of 4045545 in words is "four million, forty-five thousand, five hundred forty-five".