4551145 has 4 divisors (see below), whose sum is σ = 5461380. Its totient is φ = 3640912.

The previous prime is 4551137. The next prime is 4551179. The reversal of 4551145 is 5411554.

4551145 = 1508² + 1509².

It is a happy number.

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 2274064 + 2277081 = 1508^2 + 1509^2 .

It is a cyclic number.

It is not a de Polignac number, because 4551145 - 2³ = 4551137 is a prime.

It is a super-2 number, since 2×4551145² = 41425841622050, which contains 22 as substring.

4551145 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455110 + ... + 455119.

It is an arithmetic number, because the mean of its divisors is an integer number (1365345).

Almost surely, 2^4551145 is an apocalyptic number.

4551145 is the 1509-th centered square number.

It is an amenable number.

4551145 is a deficient number, since it is larger than the sum of its proper divisors (910235).

4551145 is an equidigital number, since it uses as much as digits as its factorization.

4551145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910234.

The product of its digits is 2000, while the sum is 25.

The square root of 4551145 is about 2133.3412760269. The cubic root of 4551145 is about 165.7194783139.

Adding to 4551145 its reverse (5411554), we get a palindrome (9962699).

It can be divided in two parts, 455 and 1145, that added together give a square (1600 = 40²).

The spelling of 4551145 in words is "four million, five hundred fifty-one thousand, one hundred forty-five".