26156261 has 2 divisors, whose sum is σ = 26156262. Its totient is φ = 26156260.

The previous prime is 26156243. The next prime is 26156287. The reversal of 26156261 is 16265162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19936225 + 6220036 = 4465^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 26156261 - 2²² = 21961957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26156201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13078130 + 13078131.

It is an arithmetic number, because the mean of its divisors is an integer number (13078131).

Almost surely, 2^26156261 is an apocalyptic number.

It is an amenable number.

26156261 is a deficient number, since it is larger than the sum of its proper divisors (1).

26156261 is an equidigital number, since it uses as much as digits as its factorization.

26156261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 26156261 is about 5114.3192117818. The cubic root of 26156261 is about 296.8419123383.

The spelling of 26156261 in words is "twenty-six million, one hundred fifty-six thousand, two hundred sixty-one".