26115541 has 2 divisors, whose sum is σ = 26115542. Its totient is φ = 26115540.

The previous prime is 26115539. The next prime is 26115581. The reversal of 26115541 is 14551162.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22524516 + 3591025 = 4746^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 26115541 - 2¹ = 26115539 is a prime.

Together with 26115539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26115581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13057770 + 13057771.

It is an arithmetic number, because the mean of its divisors is an integer number (13057771).

Almost surely, 2^26115541 is an apocalyptic number.

It is an amenable number.

26115541 is a deficient number, since it is larger than the sum of its proper divisors (1).

26115541 is an equidigital number, since it uses as much as digits as its factorization.

26115541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 26115541 is about 5110.3366816679. The cubic root of 26115541 is about 296.6877914231.

The spelling of 26115541 in words is "twenty-six million, one hundred fifteen thousand, five hundred forty-one".