26354561 has 4 divisors (see below), whose sum is σ = 26725824. Its totient is φ = 25983300.

The previous prime is 26354543. The next prime is 26354567. The reversal of 26354561 is 16545362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16545362 = 2 ⋅8272681.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26354561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26354567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185525 + ... + 185666.

It is an arithmetic number, because the mean of its divisors is an integer number (6681456).

Almost surely, 2^26354561 is an apocalyptic number.

It is an amenable number.

26354561 is a deficient number, since it is larger than the sum of its proper divisors (371263).

26354561 is an equidigital number, since it uses as much as digits as its factorization.

26354561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371262.

The product of its digits is 21600, while the sum is 32.

The square root of 26354561 is about 5133.6693504744. The cubic root of 26354561 is about 297.5901795679.

The spelling of 26354561 in words is "twenty-six million, three hundred fifty-four thousand, five hundred sixty-one".