26201601 has 12 divisors (see below), whose sum is σ = 37902228. Its totient is φ = 17442144.

The previous prime is 26201599. The next prime is 26201621. The reversal of 26201601 is 10610262.

It is a happy number.

26201601 is a `hidden beast` number, since 2 + 62 + 0 + 1 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13133376 + 13068225 = 3624^2 + 3615^2 .

It is not a de Polignac number, because 26201601 - 2¹ = 26201599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26201621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5971 + ... + 9383.

It is an arithmetic number, because the mean of its divisors is an integer number (3158519).

Almost surely, 2^26201601 is an apocalyptic number.

It is an amenable number.

26201601 is a deficient number, since it is larger than the sum of its proper divisors (11700627).

26201601 is a wasteful number, since it uses less digits than its factorization.

26201601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272 (or 4269 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 26201601 is about 5118.7499450549. The cubic root of 26201601 is about 297.0133313745.

Adding to 26201601 its reverse (10610262), we get a palindrome (36811863).

The spelling of 26201601 in words is "twenty-six million, two hundred one thousand, six hundred one".