10251009 has 8 divisors (see below), whose sum is σ = 15186720. Its totient is φ = 6833988.

The previous prime is 10250971. The next prime is 10251011. The reversal of 10251009 is 90015201.

It is not a de Polignac number, because 10251009 - 2¹⁶ = 10185473 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10250982 and 10251000.

It is not an unprimeable number, because it can be changed into a prime (10259009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189807 + ... + 189860.

It is an arithmetic number, because the mean of its divisors is an integer number (1898340).

Almost surely, 2^10251009 is an apocalyptic number.

It is an amenable number.

10251009 is a deficient number, since it is larger than the sum of its proper divisors (4935711).

10251009 is an equidigital number, since it uses as much as digits as its factorization.

10251009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379676 (or 379670 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 10251009 is about 3201.7196941644. The cubic root of 10251009 is about 217.2312018299.

The spelling of 10251009 in words is "ten million, two hundred fifty-one thousand, nine".