26310881 has 2 divisors, whose sum is σ = 26310882. Its totient is φ = 26310880.

The previous prime is 26310853. The next prime is 26310887. The reversal of 26310881 is 18801362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 707281 = 5060^2 + 841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26310881 is a prime.

It is a super-2 number, since 2×26310881² = 1384524917992322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26310887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13155440 + 13155441.

It is an arithmetic number, because the mean of its divisors is an integer number (13155441).

Almost surely, 2^26310881 is an apocalyptic number.

It is an amenable number.

26310881 is a deficient number, since it is larger than the sum of its proper divisors (1).

26310881 is an equidigital number, since it uses as much as digits as its factorization.

26310881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 26310881 is about 5129.4133192793. The cubic root of 26310881 is about 297.4256801855.

The spelling of 26310881 in words is "twenty-six million, three hundred ten thousand, eight hundred eighty-one".