4551845 has 4 divisors (see below), whose sum is σ = 5462220. Its totient is φ = 3641472.

The previous prime is 4551839. The next prime is 4551847. The reversal of 4551845 is 5481554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2869636 + 1682209 = 1694^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 4551845 - 2⁴ = 4551829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4551847) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 455180 + ... + 455189.

It is an arithmetic number, because the mean of its divisors is an integer number (1365555).

Almost surely, 2^4551845 is an apocalyptic number.

It is an amenable number.

4551845 is a deficient number, since it is larger than the sum of its proper divisors (910375).

4551845 is an equidigital number, since it uses as much as digits as its factorization.

4551845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910374.

The product of its digits is 16000, while the sum is 32.

The square root of 4551845 is about 2133.5053316081. The cubic root of 4551845 is about 165.7279741750.

The spelling of 4551845 in words is "four million, five hundred fifty-one thousand, eight hundred forty-five".