5281445 has 16 divisors (see below), whose sum is σ = 6876912. Its totient is φ = 3870720.

The previous prime is 5281433. The next prime is 5281447. The reversal of 5281445 is 5441825.

It can be written as a sum of positive squares in 8 ways, for example, as 2505889 + 2775556 = 1583^2 + 1666^2 .

It is not a de Polignac number, because 5281445 - 2⁴ = 5281429 is a prime.

It is a super-2 number, since 2×5281445² = 55787322576050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12335 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (429807).

Almost surely, 2^5281445 is an apocalyptic number.

It is an amenable number.

5281445 is a deficient number, since it is larger than the sum of its proper divisors (1595467).

5281445 is a wasteful number, since it uses less digits than its factorization.

5281445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

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

The square root of 5281445 is about 2298.1394648715. The cubic root of 5281445 is about 174.1476374998.

The spelling of 5281445 in words is "five million, two hundred eighty-one thousand, four hundred forty-five".