2456881 has 4 divisors (see below), whose sum is σ = 2807872. Its totient is φ = 2105892.

The previous prime is 2456879. The next prime is 2456917. The reversal of 2456881 is 1886542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2456881 - 2¹ = 2456879 is a prime.

It is a super-2 number, since 2×2456881² = 12072528496322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2456801) 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, 175485 + ... + 175498.

It is an arithmetic number, because the mean of its divisors is an integer number (701968).

2^2456881 is an apocalyptic number.

It is an amenable number.

2456881 is a deficient number, since it is larger than the sum of its proper divisors (350991).

2456881 is an equidigital number, since it uses as much as digits as its factorization.

2456881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350990.

The product of its digits is 15360, while the sum is 34.

The square root of 2456881 is about 1567.4440978867. Note that the first 3 decimals coincide. The cubic root of 2456881 is about 134.9360648329.

It can be divided in two parts, 24568 and 81, that added together give a square (24649 = 157²).

The spelling of 2456881 in words is "two million, four hundred fifty-six thousand, eight hundred eighty-one".