26540001 has 16 divisors (see below), whose sum is σ = 39400000. Its totient is φ = 17656704.

The previous prime is 26539993. The next prime is 26540011. The reversal of 26540001 is 10004562.

It is a happy number.

26540001 is a `hidden beast` number, since 265 + 400 + 0 + 1 = 666.

It is not a de Polignac number, because 26540001 - 2³ = 26539993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26540011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20625 + ... + 21873.

It is an arithmetic number, because the mean of its divisors is an integer number (2462500).

Almost surely, 2^26540001 is an apocalyptic number.

It is an amenable number.

26540001 is a deficient number, since it is larger than the sum of its proper divisors (12859999).

26540001 is a wasteful number, since it uses less digits than its factorization.

26540001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 26540001 is about 5151.6988460119. The cubic root of 26540001 is about 298.2865320576.

Adding to 26540001 its reverse (10004562), we get a palindrome (36544563).

The spelling of 26540001 in words is "twenty-six million, five hundred forty thousand, one".