26100561 has 8 divisors (see below), whose sum is σ = 36313920. Its totient is φ = 16643792.

The previous prime is 26100533. The next prime is 26100563. The reversal of 26100561 is 16500162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26100561 - 2¹⁰ = 26099537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26100563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189066 + ... + 189203.

It is an arithmetic number, because the mean of its divisors is an integer number (4539240).

Almost surely, 2^26100561 is an apocalyptic number.

It is an amenable number.

26100561 is a deficient number, since it is larger than the sum of its proper divisors (10213359).

26100561 is a wasteful number, since it uses less digits than its factorization.

26100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378295.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 26100561 is about 5108.8708145734. The cubic root of 26100561 is about 296.6310533917.

The spelling of 26100561 in words is "twenty-six million, one hundred thousand, five hundred sixty-one".