525840001 has 2 divisors, whose sum is σ = 525840002. Its totient is φ = 525840000.

The previous prime is 525839981. The next prime is 525840013. The reversal of 525840001 is 100048525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351600001 + 174240000 = 18751^2 + 13200^2 .

It is a cyclic number.

It is not a de Polignac number, because 525840001 - 2⁵ = 525839969 is a prime.

It is not a weakly prime, because it can be changed into another prime (525840061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262920000 + 262920001.

It is an arithmetic number, because the mean of its divisors is an integer number (262920001).

Almost surely, 2^525840001 is an apocalyptic number.

It is an amenable number.

525840001 is a deficient number, since it is larger than the sum of its proper divisors (1).

525840001 is an equidigital number, since it uses as much as digits as its factorization.

525840001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 525840001 is about 22931.2014731021. The cubic root of 525840001 is about 807.1443419012.

Adding to 525840001 its reverse (100048525), we get a palindrome (625888526).

The spelling of 525840001 in words is "five hundred twenty-five million, eight hundred forty thousand, one".