52640001 has 12 divisors (see below), whose sum is σ = 76370580. Its totient is φ = 34938720.

The previous prime is 52639999. The next prime is 52640053. The reversal of 52640001 is 10004625.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38192400 + 14447601 = 6180^2 + 3801^2 .

It is not a de Polignac number, because 52640001 - 2¹ = 52639999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52640101) 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, 10710 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (6364215).

Almost surely, 2^52640001 is an apocalyptic number.

It is an amenable number.

52640001 is a deficient number, since it is larger than the sum of its proper divisors (23730579).

52640001 is a wasteful number, since it uses less digits than its factorization.

52640001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25776 (or 25773 counting only the distinct ones).

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

The square root of 52640001 is about 7255.3429278016. The cubic root of 52640001 is about 374.7761650877.

Adding to 52640001 its reverse (10004625), we get a palindrome (62644626).

The spelling of 52640001 in words is "fifty-two million, six hundred forty thousand, one".