10251691 has 2 divisors, whose sum is σ = 10251692. Its totient is φ = 10251690.

The previous prime is 10251677. The next prime is 10251719. The reversal of 10251691 is 19615201.

10251691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10251691 - 2⁹ = 10251179 is a prime.

It is not a weakly prime, because it can be changed into another prime (10251611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5125845 + 5125846.

It is an arithmetic number, because the mean of its divisors is an integer number (5125846).

Almost surely, 2^10251691 is an apocalyptic number.

10251691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10251691 is an equidigital number, since it uses as much as digits as its factorization.

10251691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 10251691 is about 3201.8261976566. The cubic root of 10251691 is about 217.2360191896.

Adding to 10251691 its reverse (19615201), we get a palindrome (29866892).

The spelling of 10251691 in words is "ten million, two hundred fifty-one thousand, six hundred ninety-one".