26061517 has 4 divisors (see below), whose sum is σ = 26960220. Its totient is φ = 25162816.

The previous prime is 26061509. The next prime is 26061523. The reversal of 26061517 is 71516062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8328996 + 17732521 = 2886^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 26061517 - 2³ = 26061509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26061577) 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, 449308 + ... + 449365.

It is an arithmetic number, because the mean of its divisors is an integer number (6740055).

Almost surely, 2^26061517 is an apocalyptic number.

It is an amenable number.

26061517 is a deficient number, since it is larger than the sum of its proper divisors (898703).

26061517 is an equidigital number, since it uses as much as digits as its factorization.

26061517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898702.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 26061517 is about 5105.0481878235. The cubic root of 26061517 is about 296.4830687988.

Adding to 26061517 its reverse (71516062), we get a palindrome (97577579).

The spelling of 26061517 in words is "twenty-six million, sixty-one thousand, five hundred seventeen".