4545281 has 4 divisors (see below), whose sum is σ = 4894932. Its totient is φ = 4195632.

The previous prime is 4545269. The next prime is 4545337. The reversal of 4545281 is 1825454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1825454 = 2 ⋅912727.

It can be written as a sum of positive squares in 2 ways, for example, as 2560000 + 1985281 = 1600^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545281 - 2¹⁸ = 4283137 is a prime.

It is a super-2 number, since 2×4545281² = 41319158737922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4545241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174806 + ... + 174831.

It is an arithmetic number, because the mean of its divisors is an integer number (1223733).

Almost surely, 2^4545281 is an apocalyptic number.

It is an amenable number.

4545281 is a deficient number, since it is larger than the sum of its proper divisors (349651).

4545281 is a wasteful number, since it uses less digits than its factorization.

4545281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349650.

The product of its digits is 6400, while the sum is 29.

The square root of 4545281 is about 2131.9664631509. The cubic root of 4545281 is about 165.6482730320.

The spelling of 4545281 in words is "four million, five hundred forty-five thousand, two hundred eighty-one".