945281 has 4 divisors (see below), whose sum is σ = 949572. Its totient is φ = 940992.

The previous prime is 945233. The next prime is 945289. The reversal of 945281 is 182549.

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 330625 + 614656 = 575^2 + 784^2 .

It is a cyclic number.

It is not a de Polignac number, because 945281 - 2¹⁰ = 944257 is a prime.

It is a super-2 number, since 2×945281² = 1787112337922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 945281.

It is not an unprimeable number, because it can be changed into a prime (945289) 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, 1796 + ... + 2261.

It is an arithmetic number, because the mean of its divisors is an integer number (237393).

2⁹⁴⁵²⁸¹ is an apocalyptic number.

It is an amenable number.

945281 is a deficient number, since it is larger than the sum of its proper divisors (4291).

945281 is a wasteful number, since it uses less digits than its factorization.

945281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290.

The product of its digits is 2880, while the sum is 29.

The square root of 945281 is about 972.2556248230. The cubic root of 945281 is about 98.1417150045.

The spelling of 945281 in words is "nine hundred forty-five thousand, two hundred eighty-one".