1251350461 has 2 divisors, whose sum is σ = 1251350462. Its totient is φ = 1251350460.

The previous prime is 1251350423. The next prime is 1251350473. The reversal of 1251350461 is 1640531521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680427225 + 570923236 = 26085^2 + 23894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251350461 - 2⁷ = 1251350333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251350761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625675230 + 625675231.

It is an arithmetic number, because the mean of its divisors is an integer number (625675231).

Almost surely, 2^1251350461 is an apocalyptic number.

It is an amenable number.

1251350461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251350461 is an equidigital number, since it uses as much as digits as its factorization.

1251350461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1251350461 is about 35374.4323063989. The cubic root of 1251350461 is about 1077.6051360671.

Adding to 1251350461 its reverse (1640531521), we get a palindrome (2891881982).

The spelling of 1251350461 in words is "one billion, two hundred fifty-one million, three hundred fifty thousand, four hundred sixty-one".