2456281 has 4 divisors (see below), whose sum is σ = 2478132. Its totient is φ = 2434432.

The previous prime is 2456261. The next prime is 2456303. The reversal of 2456281 is 1826542.

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 84681 + 2371600 = 291^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2456281 - 2⁵ = 2456249 is a prime.

It is a super-2 number, since 2×2456281² = 12066632701922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2456261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10756 + ... + 10981.

It is an arithmetic number, because the mean of its divisors is an integer number (619533).

2^2456281 is an apocalyptic number.

It is an amenable number.

2456281 is a deficient number, since it is larger than the sum of its proper divisors (21851).

2456281 is a wasteful number, since it uses less digits than its factorization.

2456281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21850.

The product of its digits is 3840, while the sum is 28.

The square root of 2456281 is about 1567.2526918146. The cubic root of 2456281 is about 134.9250796000.

The spelling of 2456281 in words is "two million, four hundred fifty-six thousand, two hundred eighty-one".