4545423 has 16 divisors (see below), whose sum is σ = 6822400. Its totient is φ = 2990520.

The previous prime is 4545403. The next prime is 4545433. The reversal of 4545423 is 3245454.

It is a Cunningham number, because it is equal to 2132²-1.

It is a de Polignac number, because none of the positive numbers 2^k-4545423 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545403) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1068 + ... + 3198.

It is an arithmetic number, because the mean of its divisors is an integer number (426400).

Almost surely, 2^4545423 is an apocalyptic number.

4545423 is a deficient number, since it is larger than the sum of its proper divisors (2276977).

4545423 is a wasteful number, since it uses less digits than its factorization.

4545423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219 (or 2213 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 4545423 is about 2131.9997654784. Note that the first 3 decimals coincide. The cubic root of 4545423 is about 165.6499980305.

The spelling of 4545423 in words is "four million, five hundred forty-five thousand, four hundred twenty-three".