1226440451 has 2 divisors, whose sum is σ = 1226440452. Its totient is φ = 1226440450.

The previous prime is 1226440417. The next prime is 1226440483. The reversal of 1226440451 is 1540446221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1226440451 - 2⁶ = 1226440387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226443451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613220225 + 613220226.

It is an arithmetic number, because the mean of its divisors is an integer number (613220226).

Almost surely, 2^1226440451 is an apocalyptic number.

1226440451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226440451 is an equidigital number, since it uses as much as digits as its factorization.

1226440451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1226440451 is about 35020.5718257141. The cubic root of 1226440451 is about 1070.4067079984.

Adding to 1226440451 its reverse (1540446221), we get a palindrome (2766886672).

The spelling of 1226440451 in words is "one billion, two hundred twenty-six million, four hundred forty thousand, four hundred fifty-one".