525403243 has 2 divisors, whose sum is σ = 525403244. Its totient is φ = 525403242.

The previous prime is 525403211. The next prime is 525403247. The reversal of 525403243 is 342304525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 525403243 - 2⁵ = 525403211 is a prime.

It is not a weakly prime, because it can be changed into another prime (525403247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262701621 + 262701622.

It is an arithmetic number, because the mean of its divisors is an integer number (262701622).

Almost surely, 2^525403243 is an apocalyptic number.

525403243 is a deficient number, since it is larger than the sum of its proper divisors (1).

525403243 is an equidigital number, since it uses as much as digits as its factorization.

525403243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 525403243 is about 22921.6762694180. The cubic root of 525403243 is about 806.9208110460.

Adding to 525403243 its reverse (342304525), we get a palindrome (867707768).

The spelling of 525403243 in words is "five hundred twenty-five million, four hundred three thousand, two hundred forty-three".