525361813 has 2 divisors, whose sum is σ = 525361814. Its totient is φ = 525361812.

The previous prime is 525361717. The next prime is 525361819. The reversal of 525361813 is 318163525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315488644 + 209873169 = 17762^2 + 14487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525361813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525361819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262680906 + 262680907.

It is an arithmetic number, because the mean of its divisors is an integer number (262680907).

Almost surely, 2^525361813 is an apocalyptic number.

It is an amenable number.

525361813 is a deficient number, since it is larger than the sum of its proper divisors (1).

525361813 is an equidigital number, since it uses as much as digits as its factorization.

525361813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 525361813 is about 22920.7725218850. The cubic root of 525361813 is about 806.8996009194.

The spelling of 525361813 in words is "five hundred twenty-five million, three hundred sixty-one thousand, eight hundred thirteen".