26467561 has 2 divisors, whose sum is σ = 26467562. Its totient is φ = 26467560.

The previous prime is 26467547. The next prime is 26467579. The reversal of 26467561 is 16576462.

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., 26419600 + 47961 = 5140^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 26467561 - 2⁷ = 26467433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26467561.

It is not a weakly prime, because it can be changed into another prime (26464561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13233780 + 13233781.

It is an arithmetic number, because the mean of its divisors is an integer number (13233781).

Almost surely, 2^26467561 is an apocalyptic number.

It is an amenable number.

26467561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26467561 is an equidigital number, since it uses as much as digits as its factorization.

26467561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 26467561 is about 5144.6633514740. The cubic root of 26467561 is about 298.0148972328.

It can be divided in two parts, 26467 and 561, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 26467561 in words is "twenty-six million, four hundred sixty-seven thousand, five hundred sixty-one".