10026581 has 2 divisors, whose sum is σ = 10026582. Its totient is φ = 10026580.

The previous prime is 10026571. The next prime is 10026587. The reversal of 10026581 is 18562001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10023556 + 3025 = 3166^2 + 55^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10026581 is a prime.

It is a super-2 number, since 2×10026581² = 201064653099122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10026587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5013290 + 5013291.

It is an arithmetic number, because the mean of its divisors is an integer number (5013291).

Almost surely, 2^10026581 is an apocalyptic number.

It is an amenable number.

10026581 is a deficient number, since it is larger than the sum of its proper divisors (1).

10026581 is an equidigital number, since it uses as much as digits as its factorization.

10026581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 10026581 is about 3166.4776961160. The cubic root of 10026581 is about 215.6341902125.

Adding to 10026581 its reverse (18562001), we get a palindrome (28588582).

The spelling of 10026581 in words is "ten million, twenty-six thousand, five hundred eighty-one".