2278481 has 2 divisors, whose sum is σ = 2278482. Its totient is φ = 2278480.

The previous prime is 2278477. The next prime is 2278487. The reversal of 2278481 is 1848722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 13456 = 1505^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278481 - 2² = 2278477 is a prime.

It is a super-2 number, since 2×2278481² = 10382951334722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2278487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139240 + 1139241.

It is an arithmetic number, because the mean of its divisors is an integer number (1139241).

2^2278481 is an apocalyptic number.

It is an amenable number.

2278481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278481 is an equidigital number, since it uses as much as digits as its factorization.

2278481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 32.

The square root of 2278481 is about 1509.4638120869. The cubic root of 2278481 is about 131.5876518564.

The spelling of 2278481 in words is "two million, two hundred seventy-eight thousand, four hundred eighty-one".