26500001 has 4 divisors (see below), whose sum is σ = 28909104. Its totient is φ = 24090900.

The previous prime is 26499989. The next prime is 26500007. The reversal of 26500001 is 10000562.

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.

It is a cyclic number.

It is not a de Polignac number, because 26500001 - 2⁶ = 26499937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26500007) 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, 1204535 + ... + 1204556.

It is an arithmetic number, because the mean of its divisors is an integer number (7227276).

Almost surely, 2^26500001 is an apocalyptic number.

It is an amenable number.

26500001 is a deficient number, since it is larger than the sum of its proper divisors (2409103).

26500001 is a wasteful number, since it uses less digits than its factorization.

26500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409102.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 26500001 is about 5147.8151676221. The cubic root of 26500001 is about 298.1366016373.

Adding to 26500001 its reverse (10000562), we get a palindrome (36500563).

The spelling of 26500001 in words is "twenty-six million, five hundred thousand, one".