26542261 has 2 divisors, whose sum is σ = 26542262. Its totient is φ = 26542260.

The previous prime is 26542249. The next prime is 26542267. The reversal of 26542261 is 16224562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23280625 + 3261636 = 4825^2 + 1806^2 .

It is a cyclic number.

It is not a de Polignac number, because 26542261 - 2⁷ = 26542133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26542267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13271130 + 13271131.

It is an arithmetic number, because the mean of its divisors is an integer number (13271131).

Almost surely, 2^26542261 is an apocalyptic number.

It is an amenable number.

26542261 is a deficient number, since it is larger than the sum of its proper divisors (1).

26542261 is an equidigital number, since it uses as much as digits as its factorization.

26542261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 26542261 is about 5151.9181864622. The cubic root of 26542261 is about 298.2949986288.

The spelling of 26542261 in words is "twenty-six million, five hundred forty-two thousand, two hundred sixty-one".