1345226251 has 2 divisors, whose sum is σ = 1345226252. Its totient is φ = 1345226250.

The previous prime is 1345226243. The next prime is 1345226257. The reversal of 1345226251 is 1526225431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345226251 - 2³ = 1345226243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345226257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672613125 + 672613126.

It is an arithmetic number, because the mean of its divisors is an integer number (672613126).

Almost surely, 2^1345226251 is an apocalyptic number.

1345226251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345226251 is an equidigital number, since it uses as much as digits as its factorization.

1345226251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 1345226251 is about 36677.3261157353. The cubic root of 1345226251 is about 1103.9051968560.

The spelling of 1345226251 in words is "one billion, three hundred forty-five million, two hundred twenty-six thousand, two hundred fifty-one".