26561477 has 8 divisors (see below), whose sum is σ = 27544440. Its totient is φ = 25583040.

The previous prime is 26561473. The next prime is 26561501. The reversal of 26561477 is 77416562.

It can be written as a sum of positive squares in 4 ways, for example, as 2217121 + 24344356 = 1489^2 + 4934^2 .

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 26561477 - 2² = 26561473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26561477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26561471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14843 + ... + 16535.

It is an arithmetic number, because the mean of its divisors is an integer number (3443055).

Almost surely, 2^26561477 is an apocalyptic number.

It is an amenable number.

26561477 is a deficient number, since it is larger than the sum of its proper divisors (982963).

26561477 is a wasteful number, since it uses less digits than its factorization.

26561477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263.

The product of its digits is 70560, while the sum is 38.

The square root of 26561477 is about 5153.7827854887. The cubic root of 26561477 is about 298.3669675537.

The spelling of 26561477 in words is "twenty-six million, five hundred sixty-one thousand, four hundred seventy-seven".