10421251 has 2 divisors, whose sum is σ = 10421252. Its totient is φ = 10421250.

The previous prime is 10421233. The next prime is 10421287. The reversal of 10421251 is 15212401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10421251 - 2⁷ = 10421123 is a prime.

It is not a weakly prime, because it can be changed into another prime (10421951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210625 + 5210626.

It is an arithmetic number, because the mean of its divisors is an integer number (5210626).

Almost surely, 2^10421251 is an apocalyptic number.

10421251 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421251 is an equidigital number, since it uses as much as digits as its factorization.

10421251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 10421251 is about 3228.1962455836. The cubic root of 10421251 is about 218.4271497576.

Adding to 10421251 its reverse (15212401), we get a palindrome (25633652).

The spelling of 10421251 in words is "ten million, four hundred twenty-one thousand, two hundred fifty-one".