26451641 has 2 divisors, whose sum is σ = 26451642. Its totient is φ = 26451640.

The previous prime is 26451637. The next prime is 26451661. The reversal of 26451641 is 14615462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 32041 = 5140^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 26451641 - 2² = 26451637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_1650935 and since 26451641 and 1650935 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (26451661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13225820 + 13225821.

It is an arithmetic number, because the mean of its divisors is an integer number (13225821).

Almost surely, 2^26451641 is an apocalyptic number.

It is an amenable number.

26451641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26451641 is an equidigital number, since it uses as much as digits as its factorization.

26451641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 26451641 is about 5143.1158843643. The cubic root of 26451641 is about 297.9551341551.

The spelling of 26451641 in words is "twenty-six million, four hundred fifty-one thousand, six hundred forty-one".